abacus n. manual computing device consisting of a frame holding parallel rods strung with movable counters | 
absent a. go away or leave ; missing; not present | 
accompany v. travel with; be associated with | 
according a. (followed by `to') in agreement with or accordant with | 
active a. disposed to take action or effectuate change | 
adaptation n. modification; alteration or adjustment in structure or habits | 
addict v. cause someone to become dependent; indulge in; be devoted to | 
adhere v. stick fast; stick to firmly; be compatible or in accordance with | 
adhesive n. glue; paste ; substance that unites or bonds surfaces together | 
adjacent a. adjoining; neighboring; close to; lying near | 
adjective n. a word which describes a noun | 
adjourn v. break from a meeting or gathering | 
adjustment n. making or becoming suitable; adjusting to circumstances | 
admission n. act or practice of admitting; power or permission to enter | 
adverb n. the word class that qualifies verbs or clauses | 
advertisement n. a public promotion of some product or service | 
advocate v. speak, plead, or argue in favour of; plead for; push for something | 
aerodynamic a. designed or arranged to offer the least resistant to fluid flow | 
aeronautics n. the theory and practice of navigation through air or space | 
aerosol n. a dispenser that holds a substance under pressure and that can release it as a fine spray (usually by means of a propellant gas) | 
aerospace n. the atmosphere and outer space considered as a whole | 
afraid a. feeling fear or anxiety; frightened | 
Africa n. the second largest continent; located to the south of Europe and bordered to the west by the South Atlantic and to the east by the Indian Ocean | 
afterwards ad. happening at a time subsequent to a reference time | 
agility n. mentally quick; moving quickly and lightly | 
agreement n. state of agreeing; harmony of opinion, statement, action, or character | 
ahead ad. further forward in space; in the line of one's forward motion | 
allow v. admit an activity as legal or acceptable | 
allowable a. deductible according to the tax laws | 
alternate a. happening or following in turns; succeeding each other continuously; substitute | 
alto n. the highest adult male singing voice | 
alumnus n. a pupil or graduate of a school or college (plural: alumni) | 
ambidextrous a. capable of using either hand with equal ease | 
ambient a. completely enveloping | 
ambiguity n. state of being ambiguous; doubtfulness or uncertainty | 
ambition n. aspiration | 
ambivalent a. mixed;  experiencing or expressing opposing or contradictory feelings | 
ambulance n. wagon for conveying the wounded to hospital | 
ancestor n. a person related to you who lived a long time ago; forefather, forerunner, or predecessor | 
ancient a. of or from a long time ago, having lasted for a very long time | 
animation n. act of animating, or giving life or spirit; state of being animate or alive. | 
anniversary a. annual; yearly; annual return of the day on which any notable event took place | 
annual a. occurring once every year; payable once every year | 
Antarctica n. an extremely cold continent at the south pole almost entirely below the Antarctic Circle; covered by an ice cap up to 13,000 feet deep | 
antelope n. graceful deerlike ruminant with long legs and horns directed upward and backward | 
anthropology n. social science that studies origins and social relationships of human beings | 
antibiotic a.  of or relating to chemical substance that kills microorganisms and cures infections | 
antibody n. any of a large variety of proteins normally present in the body or produced in response to an antigen which it neutralizes, thus producing an immune response | 
antidote n. medicine to counteract a poison or disease; agent that relieves or counteracts | 
antifreeze n. a liquid added to the water in a cooling system to lower its freezing point | 
antiseptic n. substance that prevents infection; substance that restricts the growth of disease-causing microorganisms | 
antisocial a. hostile to or disruptive of normal standards of social behavior | 
apology n. acknowledgment expressing regret or asking pardon for a fault or offense; explanation or excuse | 
apostrophe n. text character used to mark the possessive or to show the omission of letters or numbers | 
apparently ad. from appearances alone | 
applicant n. candidate | 
application n. close attention; work of applying something; verbal or written request for assistance | 
appreciate v. be thankful for; increase in worth; be thoroughly conscious of | 
apprentice n. works for an expert to learn a trade; beginner or learner | 
approach n. access; method | 
approximate v. come close or be similar to something in quality, nature, or quantity; come near | 
April n. the month following March and preceding May | 
archaeology n. study of artifacts and relics of early mankind | 
archery n. the sport of shooting arrows with a bow | 
arrive v. reach a destination | 
article n. essay, a piece of writing | 
articulate a. expressing oneself easily in clear and effective language | 
ashamed a. affected by shame; abashed or confused by guilt | 
assistant n. helper; person who assists or helps someone else | 
associate v. connect or join together; combine | 
astrology n. study of the positions of stars, in the belief that stars affect the character and lives of people | 
astronaut n. a person trained to travel in a spacecraft | 
astronomical a. enormously large or extensive; relating to astronomy | 
atmosphere n. air, the mixture of gases around the earth | 
attribute n. essential quality; reputation; honor | 
auction n. public sale of property to the highest bidder | 
audible a. heard or perceptible by the ear | 
audio n. sound, or sound signal | 
audit v. make an official examination of the accounts of a business and produce a report | 
audition v. take part in a trial performance; evaluate in a trial performance | 
auditor n. a student who attends a course but does not take it for credit | 
auditorium n. area of theater or concert hall where audience sits | 
auditory a. of or relating to hearing, the organs of hearing, or the sense of hearing | 
August n. the month following July and preceding September | 
authenticity n. quality of being genuine or trustworthy | 
autobiography n. biography or story written by oneself | 
autograph n. a person's own signature | 
autumn n. the season when the leaves fall from the trees | 
avenue n. way or opening for entrance or exit place; passage by which a place may be reached; broad street | 
aware a. knowing; having knowledge or cognizance | 
awkward a. difficult to handle or manage | 
axiom n. self-evident truth requiring no proof | 
bacteria n. very small organisms that are found everywhere and are the cause of many diseases | 
baritone n. the second lowest brass wind instrument | 
bass n. the lowest part of the musical range | 
beetle v. be suspended over or hang over | 
beginning n. the first part or section of something | 
beige n. a light greyish brown color | 
bicycle n. a wheeled vehicle that has two wheels and is moved by foot pedals | 
biography n. an account of the series of events making up a person's life;  accounts of people's life | 
biology n. science that studies living organisms | 
blizzard n. snowstorm; storm | 
bottom n. the lowest point or par | 
brace n. something which holds anything tightly or supports it firmly, as bandage, cord, or rod; | 
Brazil n. the largest Latin American country and the largest Portuguese speaking country in the world; located in the central and northeastern part of South America; world's leading coffee exporter | 
breakable n. an article that is fragile and easily broken | 
breakfast n. a meal eaten in the morning, the first of the day | 
breathe v. respire; inhale and exhale air | 
brilliant a. full of light; shining or bright; sharp and clear in tone | 
bruise v. injure, as by a blow or collision; contuse; fight with the fists | 
burglar n. a thief who enters a building with intent to steal | 
business n. an occupation, profession, or trade | 
cactus n. any plant of the order Cactacae, as the prickly pear and the night-blooming cereus | 
cadence n. rhythmic rise and fall of words or sounds; beat | 
calico n. coarse cloth with a bright print | 
California n. a state in the western United States on the Pacific, the 3rd largest state | 
Canada n. second largest country in world, covering half of North America | 
canine a. related to dogs; dog-like; affecting or derived from dogs | 
canter n. slow gallop; moderate running pace of horse | 
capacity n. mental or physical ability; ability to accommodate | 
capital n. the city or town that is the official seat of government in a country, state | 
captain n. the person in command of a ship | 
cartographer n. one who makes maps or charts | 
cartoon n. design or study drawn of full size to serve as a model for transferring or copying; drawing depicting a humorous situation | 
casual a. informal; purposeless; occurring by chance | 
category n. group, class, or collection of things sharing a common attribute | 
cathedral n. church; temple | 
caught v. (past tense) be in time for; trap after chasing or hunting | 
centennial a. of hundredth anniversary; lasting or aged a hundred years | 
certificate n. document attesting to the truth of certain stated facts; document issued to a person completing a course | 
chapter n. division of a book | 
chief n. a leader or ruler of a people | 
China n. high quality porcelain originally made only in China | 
choreography n. art of representing dances in written symbols; arrangement of dances | 
chromosome n. a structure in the cell nucleus that contains DNA | 
chronology n. time sequence; arrangement of events in time | 
circumstantial a. fully detailed and specific about particulars | 
cliff n. a steep high face of rock | 
climb n. an event that involves rising to a higher point | 
clinic n. healthcare facility for outpatient care | 
cluster n. group; bunch; group of the same or similar elements gathered or occurring closely | 
coast n. the part of the land near the sea | 
collapse v. breakdown; fall down suddenly because of pressure or having no support | 
collate v. examine in order to verify authenticity; arrange in order | 
colleague n. fellow worker; associate; co-worker | 
collide v. come into conflict or opposition; conflict | 
collision n. crash; conflict of opposed ideas or attitudes or goals | 
colonel n. a commissioned military officer | 
colony n. region politically controlled by a distant country; a dependency; a community of social insects, as ants, bees | 
Colorado n. a state in west central United States in the Rocky Mountains | 
column n. a tall solid upright stone post | 
comet n. an object that goes around the sun | 
comic a. arousing or provoking laughter; ridiculous; amusing; humorous | 
comma n. a punctuation mark (,) used to indicate the separation of elements within the grammatical structure of a sentence | 
commercial a. money making, involved in work that is intended for the mass market | 
commission n. fee for services; group of people appointed to find out about something; authorize | 
committee n. special group delegated to consider some matter | 
communication n. activity of communicating; conveying information, like message, letter, or announcement | 
compact a. closely and firmly united or packed together; briefly giving gist of something | 
companion n. a person you spend a lot of time with, often because of friends or travelling together; partner | 
company n. fellowship; association | 
comparison n. considering something similar or of equal quality to something else | 
compensate v. make amends for; reimburse | 
competition n. struggle; rivalry; act of competing as for profit or a prize | 
complaint n. expression of pain, dissatisfaction, or resentment; criticism | 
completely ad. with everything necessary | 
compliant a. yielding to request or desire; ready to accommodate; disposed or willing to comply | 
composite a. made up of distinct parts or elements; compounded | 
compound a. composed of two or more parts | 
comprehensible a. understandable; readily comprehended or understood; intelligible | 
compulsory a. mandatory; obligatory; required by rule | 
conceive v. form or develop in the mind; devise; become pregnant with; begin or originate in a specific way | 
concentration n. complete attention; intense mental effort | 
concept n. something formed in the mind; thought or notion | 
concession n. something that is allowed or given up, often to end a disagreement; act of yielding | 
conditions n. (usually plural) a statement of what is required as part of an agreement | 
conflict n. fight; struggle; incompatibility of dates or events | 
conjunction n. state of being conjoined, united, or associated; union; association; league | 
Connecticut n. a state in the northeastern US, a New England state | 
connection n. relation between things or events; shifting from one form of transportation to another | 
conquest n. success in mastering something difficult; one that has been captivated or overcome | 
conscience n. motivation deriving logically from ethical or moral principles | 
consequently ad. therefore; as a result or consequence of something; subsequently | 
considerable a. worthy of consideration; large in amount, extent, or degree | 
consonant n. a speech sound that is not a vowel | 
constant a. invariable or repeating; continually occurring; persistent | 
container n. any object that can be used to hold things | 
contestant n. a person who participates in competitions | 
continue v. exist over a prolonged period of time | 
controlled v. exercise authoritative control or power over | 
convention n. social or moral custom; formal meeting of members, representatives, or delegates; agreement between states | 
convict v. find or declare guilty | 
coordinate v. bring order and organization to; harmonize | 
corresponding a. accompanying | 
cougar n. large American feline resembling a lion | 
coward n. person who lacks courage to face danger; timid | 
create v. cause to exist; make | 
criminology n. the scientific study of crime and criminal behavior and law enforcement | 
criticize v. find fault with; express criticism of; point out real or perceived flaws | 
cruel a. (of persons or their actions) able or disposed to inflict pain or suffering | 
cyclone n. violent rotating windstorm | 
daisy n. any of numerous composite plants having flower heads with well-developed ray flowers usually arranged in a single whorl | 
debatable a. disputable; unsettled; open to doubt or debate | 
December n. the last (12th) month of the year | 
deception n. act of deceiving | 
declaration n. announcement; explicit  statement; formal public statement | 
dedication n. the act of binding yourself (intellectually or emotionally) to a course of action | 
defendant n. a person in a court of law who is accused of having done something wrong | 
Delaware n. a state in the northeastern US | 
delegate n. person authorized to act as representative for another; deputy | 
delight v. hold spellbound | 
delivery n. the action of delivering letters, packages, or goods | 
dermatology n. the branch of medicine dealing with the skin and its diseases | 
description n. sketch or account of anything in words | 
design n. a plan or drawing produced to show the look and function | 
desirable a. worthwhile; worth doing or achieving; advisable | 
details n. true confidential information | 
developing n. processing a photosensitive material in order to make an image visible | 
difficult a. needing much effort or skill to accomplish, deal with | 
digestive a. relating to or having the power to cause or promote digestion | 
dimensional a. of or relating to dimensions | 
dioxide n. an oxide containing two atoms of oxygen in the molecule | 
direct v. manage or guide by advice, helpful information | 
disadvantage n. an unfavorable circumstance or condition that reduces the chances of success | 
disappoint v. fail to meet the hopes or expectations of | 
disapprove v. have or express an unfavorable opinion about something | 
discard v. throw out something from one's hand; get rid of | 
disengage v. release from something that holds firmly | 
dislike v. feel distaste for or hostility toward | 
disposal n. the power to use something or someone | 
dissatisfied a. in a state of sulky dissatisfaction | 
dissolve v. melt; liquefy; cause to pass into solution; cause to disappear or vanish | 
distinct a. clearly noticeable; that certainly exists | 
distinguishable a. (often followed by `from') not alike; different in nature or quality | 
doctor n. a person licensed to practice medicine | 
domination n. the exercise of control or influence over someone or something | 
dozen n. the cardinal number that is the sum of eleven and one | 
duplex n. a house with two units sharing a common wall | 
duplicate n. one that corresponds exactly to another, especially an original; identical copy; facsimile | 
eagle v. shoot in two strokes under par | 
editing v. cut or eliminate | 
effect n. a result or condition produced by a cause | 
Egypt n. an ancient empire to the west of Israel; centered on the Nile River and ruled by a Pharaoh; figured in many events described in the Old Testament | 
elasticity n. tendency of a body to return to its original shape after it has been stretched or compressed | 
element n. a part of something abstract, especially one that is essential or characteristic | 
elf n. (folklore) fairies that are somewhat mischievous | 
elves n. an acronym for emissions of light and very low frequency perturbations due to electromagnetic pulse sources; extremely bright extremely short (less than a msec) electrical flashes forming a huge ring (up to 400 km diameter) in the ionosphere | 
encounter v. confront or meet, especially unexpectedly | 
engage v. obtain for services of; arrange for the use of; pledge or promise, especially to marry | 
England n. a division of the United Kingdom | 
enjoy v. take pleasure in; find or experience pleasure for | 
entire a. with no part left out; whole | 
entrance n. a door, gate, etc. by which you can enter a building or place | 
environment n. surroundings; totality of surrounding conditions | 
equine a. be similar or bear likeness to horse; relating to horse | 
equinox n. period of equal days and nights; beginning of Spring and Autumn | 
escape v. get free from something, or to avoid something | 
esophagus n. the passage between the pharynx and the stomach | 
essential a. necessary; critical; vital; constituting or being part of the essence of something | 
estimate v. judge to be probable; form an opinion about; evaluate | 
ethnicity n. common characteristics of a group of people;  ethnic group; quality or affiliation resulting from racial or cultural ties | 
evening n. the time at the end of the day, usually from 6 p.m. to bedtime | 
eventually ad. ultimately; in the final result or issue; in the end | 
exactly ad. in every respect; just | 
excellent a. extremely good; of great worth; eminent | 
exchange n. substitute; trade in; give in return for something received | 
excitable a. capable of responding to stimuli; easily excited | 
exciting a. causing great interest or enthusiasm | 
exclamation n. an abrupt excited utterance | 
exhausting a. tending to exhaust, enfeeble, or drain the strength | 
exodus n. departure of a large number of people | 
expect v. regard something as likely to happen | 
expensive a. high in price or charging high prices; costing a lot of money | 
experience n. practical contact with and observation of facts or events | 
explanation n. a statement that makes something comprehensible by describing the relevant structure or operation or circumstances etc. | 
exploration n. travel for the purpose of discovery | 
exponent n. one that expounds or interprets; one that speaks for, represents, or advocates | 
external a. exterior; outer; suitable for application to the outside | 
extravagant a. wandering beyond one's bounds; exceeding due bounds; wild; excessive; unrestrained | 
factor n. number, except 1, by which a large number can be divided exactly | 
famous a. known about by many people | 
fantastic a. excellent or extraordinary | 
fashion n. style, shape, appearance, or mode of structure; pattern, model | 
February n. the month following January and preceding March | 
feline n. catlike; animal of the family Felidae | 
finance n. management of money and credit and banking and investments; subsidizing; fund | 
financial a. monetary;  relating to money matters | 
flavor n. distinctive taste; quality produced by the sensation of taste | 
Florida n. a state in southeastern United States between the Atlantic and the Gulf of Mexico | 
forbidding a. prohibitive; harshly uninviting or formidable in manner or appearance | 
forecast n. prediction about how something will develop, as for weather | 
formation n. a structure or arrangement of something; pattern | 
fortress n. fort; castle; fortified place, especially a large military stronghold, often includes a town | 
fracture v. break into pieces; crack; destroy; violate or abuse | 
freeze n. fixing (of prices or wages etc) at a particular level | 
freight n. transport commercially as cargo; load with goods; goods carried by a large vehicle | 
French a. of or pertaining to France or the people of France | 
frequent v. do one's shopping at; do business with; be a customer or client of | 
frustrating a. preventing realization or attainment of a desire | 
function n. act of executing or performing any duty; assigned duty or activity | 
fungi n. the taxonomic kingdom including yeast, molds, smuts, mushrooms, and toadstools; distinct from the green plants | 
fungus n. plant belonging to the group Fungi | 
furthermore ad. in addition; moreover; still further | 
galaxy n. large, isolated system of stars, as the Milky Way; any collection of brilliant personalities | 
gallop v. move or run rapidly or carelessly, as by a quadruped, particularly by a horse lifting alternately the fore feet and the hind feet, in successive leaps or bounds | 
gaseous a. of gas; gas-like; lacking substance or concreteness | 
gauge n. measuring instrument; measure or judge | 
gene n. (genetics) a segment of DNA that is involved in producing a polypeptide chain; it can include regions preceding and following the coding DNA as well as introns between the exons; it is considered a unit of heredity | 
generation n. all offspring at same stage from common ancestor; interval of time between the birth of parents and their offspring | 
genuine a. authentic; sincerely and honestly felt or experienced; real or true | 
geometry n. branch of mathematics about the properties and relations of points, lines, surfaces | 
Germany n. a republic in central Europe; split into East Germany and West Germany after World War II and reunited in 1990 | 
giant n. person of extraordinary strength or powers, bodily or intellectual | 
gopher n. burrowing edible land tortoise of southeastern North America | 
graduate n. one who has completed the prescribed course of study | 
graphic a. represented by graph; described in vivid detail; clearly outlined | 
graphite n. something used as a lubricant and as a moderator in nuclear reactors | 
greatest a. highest in quality | 
Greek n. a native or inhabitant of Greece | 
grumble v. utter or emit low dull rumbling sounds | 
gullible a. easily deceived or cheated; easily tricked because of being too trusting | 
Hawaii n. a state in the United States in the central Pacific | 
headache n. pain you feel inside your head | 
heritage n. legacy;  something that is passed down from preceding generations; a tradition | 
hesitate v. pause or hold back in uncertainty or unwillingness | 
hippopotamus n. massive thick-skinned herbivorous animal living in or around rivers of tropical Africa | 
horizon n. line at which the sky and Earth appear to meet; range of one's knowledge, experience, or interest | 
horrible a. exciting, or tending to horror or fear; hideous | 
hospital n. a health facility where patients receive treatment | 
human n. a man, woman, or child, not an animal | 
hundredth n. position 100 in a countable series of things | 
hurricane n. a violent wind that has a circular movement, especially in the West Atlantic Ocean | 
hurry v. move very fast | 
hydrogen n. a chemical element that is the lightest gas, has no colour, taste, or smell | 
hyena n. any carnivorous mammal of the family Hyaenidae | 
ignorant a. lacking education or knowledge; unaware | 
ignore v. intentionally not listen or give attention to | 
Illinois n. a midwestern state in north-central United States | 
impartial a. fair; showing lack of favoritism | 
impatient a. easily annoyed by someone's mistakes or because don't want to wait | 
imply v. express or indicate indirectly; signify | 
improvement n. the act of improving something | 
inadequate a. not sufficient to meet a need; insufficient; poor | 
incidentally ad. by chance; as a chance occurrence; accidentally | 
income n. gain from labor, business, property, or capital | 
increase v. become greater, as in number, size, strength, or quality | 
incredible a. unbelievable; beyond belief or understanding | 
indeed ad. (used as an interjection) an expression of surprise or skepticism or irony etc. | 
indefinite a. unclear; vague; lacking precise limits | 
indicate v. point out; direct to a knowledge of | 
industry n. economic activity like processing of raw materials and manufacture of goods | 
ineffective a. not producing an intended effect | 
inefficient a. lacking the ability or skill to perform effectively; inadequate | 
ineligible a. unsuitable; disqualified by law, rule, or provision; unworthy of being chosen | 
inequality n. a lack of equality or fair treatment in the sharing of opportunities | 
influential a. important; powerful; having or exercising influence or power | 
information n. knowledge gained through study, communication, etc | 
infraction n. violation of rule or regulation; breach; minor offence or petty crime | 
inherit v. receive from an ancestor by legal succession or will; receive by bequest or as a legacy | 
inquiry n. investigation; search for knowledge | 
insect n. a small creature such as an ant or fly | 
insecure a. not confident or assured; uncertain and anxious | 
instant n. a very short time (as the time it takes the eye to blink or the heart to beat) | 
instruction n. direction or teaching; activities of educating or instructing | 
insult v. offend; affront; treat, mention, or speak to rudely | 
insurance n. protection against possible future loss by paying a company money | 
interesting a. exciting and holding the attention | 
internal a. inside; interior;  located within the limits or surface | 
internet n. a computer network consisting of a worldwide network of computer networks that use the TCP/IP network protocols to facilitate data transmission and exchange | 
interstate n. one of the system of highways linking major cities in the 48 contiguous states of the United States | 
intestine a. inward; internal with regard to a state or country; domestic; not foreign | 
introduction n. formally making a person known to another or to the public | 
invisible a. incapable of being seen; impossible or nearly impossible to see | 
irritate v. rouse to impatience or anger; annoy; provoke | 
Italy n. a republic in southern Europe on the Italian Peninsula; was the core of the Roman Republic and the Roman Empire between the 4th century BC and the 5th century AD | 
January n. the first month of the year; begins 10 days after the winter solstice | 
jewelry n. adornment made of precious metals, as a bracelet or ring or necklace | 
journeyman n. a skilled worker who practices some trade or handicraft | 
July n. the month following June and preceding August | 
June n. the month following May and preceding July | 
Jupiter n. (Roman mythology) supreme god of Romans; counterpart of Greek Zeus | 
knitting n. creating knitted wear | 
laughter n. the act or sound of laughing | 
launch v. begin, originate, or initiate; send off; take off | 
lavender n. a pale purple color | 
leopard n. large feline of African and Asian forests usually having a tawny coat with black spots | 
level n. relative position in rank, class or authority | 
library n. a building or room contain books for reading and study | 
limiting n. the greatest possible degree of something | 
lizard n. relatively long-bodied reptile with usually two pairs of legs and a tapering tail | 
locate v. discover the exact place or position of | 
logic n. reasoned and reasonable judgment; a system of reasoning | 
Louisiana n. a state in southern United States on the Gulf of Mexico | 
loyal a. faithful to a person, ideal, custom, cause, or duty | 
magenta n. a primary subtractive color for light; a dark purple-red color; the dye for magenta was discovered in 1859, the year of the battle of Magenta | 
major a. important, serious, or significant. | 
mall n. a large building or series of buildings containing a variety of retail stores | 
mandatory a. obligatory; required or commanded by authority | 
mansion n. dwelling-house of the better class; a large or stately residence | 
Massachusetts n. a member of the Algonquian people who formerly lived around Massachusetts Bay | 
matter v. be of importance | 
media n. public institutions that report the news, such as newspapers, radio, and tv | 
melody n. musical sounds in agreeable succession or arrangement | 
melon n. juicy fruit of certain cucurbitaceous plants, as the muskmelon, watermelon;  plant that produces the fruit juicy | 
merciless a. having or showing no mercy | 
Mercury n. temperature measured by a mercury thermometer | 
meteorology n. earth science dealing with phenomena of the atmosphere; predicting what the weather will be | 
methodology n. system of methods followed in a particular discipline | 
Mexico n. a republic in southern North America; became independent from Spain in 1810 | 
migration n. movement of persons from one country or locality to another | 
millennium n. span of one thousand years; thousandth anniversary | 
millionth a. the ordinal number of one million in counting order | 
Minnesota n. a midwestern state | 
misconception n. mistaken thought, idea, or notion; erroneous conception; false opinion | 
Mississippi n. a state in the Deep South on the gulf of Mexico | 
Missouri n. a dialect of the Chiwere language spoken by the Missouri | 
modern a. of the present or recent times | 
molecule n. the smallest unit without losing its own chemical nature, consisting usually of two or more atoms | 
motion n. movement; act of changing location; ability or power to move | 
museum n. a place for collecting and displaying objects having scientific, historical, or artistic value | 
mustard n. a yellow-flowered plant of the cabbage family whose seeds are used to make paste | 
mythology n. study of myths; collection of myths | 
nautical a. relating to ships, sailors, or navigation | 
navigation n. guidance of ships or airplanes from place to place | 
necessary a. required to be done, present; needed; essential. | 
needle n. long, thin, sharp implement usually for piercing such as sewing, or knitting | 
Neptune n. a giant planet with a ring of ice particles; the 8th planet from the sun is the most remote of the gas giants | 
noisily ad. with much noise or loud and unpleasant sound | 
noodle n. a ribbonlike strip of pasta | 
northern a. situated in the north, or directed toward or facing the north | 
notable a. worthy of note or notice; remarkable; important | 
notation n. technical system of symbols used to represent special things; comment or instruction | 
notify v. make known;  give notice to; inform by notice | 
novel n. printed and bound book that is an extended work of fiction | 
November n. the month following October and preceding December | 
nucleus n. central or essential part around which other parts are gathered or grouped; core | 
obligation n. act of binding oneself by a social, legal, or moral tie; written promise to repay a debt | 
oblong a. having greater length than breadth, especially when rectangular | 
obnoxious a. causing disapproval or protest; very annoying or objectionable; offensive | 
obsessed a. having or showing excessive or compulsive concern; influenced or controlled by a powerful force | 
obsolete a. no longer useful; outmoded; antiquated | 
obstruct v. stop; impede; shut out from view | 
obvious a. exposed; easily discovered; plain | 
occupation n. act of occupying or taking possession; control of a country by military forces of a foreign power | 
octave n. a feast day and the seven days following it | 
October n. the month following September and preceding November | 
octopus n. any of several marine mollusks | 
opposite a. having a position on the other or further side of something | 
orchard n. garden; area of land devoted to the cultivation of fruit or nut trees | 
ostrich n. large bird of the genus Struthio | 
otherwise ad. in other respects or ways | 
oxygen n. one of the gases which make up the air | 
palatial a. of nature of palace, as in spaciousness or ornateness | 
panel n. a group of people gathered for a special purpose; small board or pad | 
participle n. a non-finite form of the verb; in English it is used adjectivally and to form compound tenses | 
particular a. special or more than usual | 
passive a. lacking in energy or will;  peacefully resistant in response to injustice | 
pathology n. science which treats of diseases, their nature, causes, progress, symptoms; departure or deviation from a normal condition | 
pelican n. large long-winged warm-water seabird having a large bill with a distensible pouch for fish | 
Pennsylvania n. a Mid-Atlantic state; one of the original 13 colonies | 
perennial n. lasting indefinitely long time; suggesting self-renewal; remaining active throughout all the time | 
performance n. act of performing; dramatic or musical entertainment | 
period n. a length or portion of time | 
perishable a. liable to perish; subject to destruction or death or decay | 
permissible a. proper to be permitted; allowable; admissible. | 
persecution n. act of persecuting on the basis of race, religion, gender, sexual orientation, or beliefs that differ from those of the persecutor | 
petroleum n. dark oil consisting mainly of hydrocarbons  | 
pharmacy n. art or practice of preparing and preserving drugs | 
picnic v. have informal meal eaten outside or on an excursion | 
pilgrim n. traveler; one who travels far, or in strange lands, to visit some holy place or shrine as a devotee | 
plaster n. cover conspicuously, as by pasting something on; adhesive tape used in dressing wounds; a hardened surface as on a wall or ceiling | 
playwright n. someone who writes plays | 
pleasant a. affording pleasure; being in harmony with your taste or likings | 
plentiful a. existing in great number or quantity | 
plunge v. dive; submerge; become suddenly lower; decrease dramatically; throw oneself into a substance or place | 
politician n. a member of a government or law-making organization | 
porcupine n. relatively large rodents with sharp erectile bristles mingled with the fur | 
possible a. able to be done | 
powerful a. having great power or force | 
practice v. perform or do habitually | 
preferable a. more desirable or worthy than another; better or more suitable | 
prejudice n. an unfair and unreasonable opinion or feeling; leaning toward one side of a question | 
preposition n. (linguistics) the placing of one linguistic element before another (as placing a modifier before the word it modifies in a sentence or placing an affix before the base to which it is attached) | 
prescription n. written instructions from doctor; written order; act of establishing official rules, laws, or directions | 
printed n. a visible indication made on a surface | 
process n. a series of actions taken in order to achieve a particular end | 
production n. the act or process of producing something | 
projection n. plan for anticipated course of action; thing that extends outward beyond a prevailing line or surface | 
prompt v. move to act; incite; give rise to; assist with a reminder | 
property n. thing or things owned; possession | 
protein n. one of the many substances found in food, such as meat or eggs, that is necessary for the body to grow | 
provide v. make available for use; supply | 
psychology n. science that deals with mental processes and behavior | 
publicity n. state of being public; information to attract public notice | 
quadrangle n. four-sided plane figure; | 
quadrant n. a measuring instrument for measuring altitude of heavenly bodies | 
quadruple v. increase fourfold; become four times as big | 
quarrel v. have a heated argument or disagreement | 
quartet n. composition for four voices or four instruments; a group of four | 
questionable a. subject to question; admitting of being questioned; inviting, or seeming to invite, inquiry | 
racial a. of or characteristic of race or races or arising from differences among groups | 
radio n. an apparatus for receiving waves | 
realize v. understand a situation, sometimes suddenly | 
recent a. of the immediate past or just previous to the present time | 
recession n. withdrawal; retreat; time of low economic activity | 
reduction n. any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen); always occurs accompanied by oxidation of the reducing agent | 
refraction n. turning or bending of any wave, such as light or sound wave, when it passes from one medium into another of different optical density | 
refrigerator n. machines in which food can be stored at low temperatures | 
register v. put information, especially name, into an official list; record in writing | 
regrettable a. deserving regret | 
rehearse v. practice; drill; engage in preparation for a public performance | 
reindeer n. Arctic deer with large antlers in both sexes | 
rely v. rest with confidence; have confidence; depend | 
remain v. be left; continue to exist | 
remarkable a. worthy of notice; extraordinary | 
renaissance n. revival; renewal; revival of learning and culture | 
renewable a. capable of being renewed or extended | 
repeated n. an event that repeats | 
representation n. act of representing; standing in for someone or some group and speaking with authority in their behalf  | 
require v. insist upon having;  request and expect | 
residential a. of or relating to or connected with residence | 
respiratory a. inhaling and exhaling; breathing | 
restaurant n. a place where meals are prepared and served to customers | 
reverent a. respectful; worshipful; impressed with veneration or deep respect | 
revolution n. act of revolving; motion of body round a fixed point or line; rotation; total or radical change; fundamental change in political organization | 
rhythm n. a strong, regular, repeated pattern of movement or sound | 
ridiculous a. completely lacking of wisdom or good sense | 
rivalry n. competition; the act of competing as for profit or a prize | 
route n. way for travel or transportation | 
running a. executed or initiated by running | 
salmon n. fish that mature in the sea but migrate to freshwater streams to spawn | 
sandwich n. two or more slices of bread with a filling between them | 
saturated a. soaked; drenched; unable to hold or contain more; full | 
Saturn n. (Roman mythology) god of agriculture and vegetation; counterpart of Greek Cronus | 
saucer n. dish; small shallow dish having a slight circular depression in the center for holding a cup | 
sausage n. a thin, tube-like case containing meat that has been cut into very small pieces and mixed with spices | 
scissors n. (plural) edge tool having two crossed pivoting blades | 
scowl v. frown with displeasure | 
secret n. a thing kept from general knowledge | 
secretary n. a person who is the head of an administrative department of government | 
sense n. one of the faculties of sight, smell, hearing, taste, and touch | 
separate v. keep apart or divide | 
September n. the month following August and preceding October | 
serious a. grave in manner or disposition | 
servant n. a person working in the service of another, especially in the household | 
settlement n. a community of people smaller than a town | 
shelf n. a projecting ridge on a mountain or submerged under water | 
shelves v. hold back to a later time | 
silent a. making no sound; quiet | 
similar a. like or alike; of the same kind | 
single a. only one | 
situation n. a condition or position in which you find yourself | 
skunk n. a small, black and white animal that makes a strong, unpleasant smell as a defence | 
smile v. regard with favor | 
sociology n. the study of the relationships between people living in groups, especially in industrial societies | 
solemn a. serious and without any humour | 
solidify v. become solid  | 
solstice n. either of the two times of a year when the sun is at its greatest distance from the celestial equator | 
solution n. the act of solving a problem, question | 
someone pron. some person; somebody | 
soprano n. treble; the highest vocal register; the highest kind of female or boy's voice; upper part in harmony for mixed voices | 
southern a. situated in the south or directed toward the south | 
spaghetti n. spaghetti served with a tomato sauce | 
Spain n. a parliamentary monarchy in southwestern Europe on the Iberian Peninsula; a former colonial power | 
specific a. stated explicitly or in detail; definite | 
spectacle n. a public event or show that is exciting to watch; an exciting appearance | 
spherical a. of or relating to spheres; having the shape of a sphere or ball | 
sprint v. run very rapidly; run at full speed. | 
standard n. criteria; basis for comparison | 
statement n. a clear expression of something in speech or writing | 
station n. a regular stopping place on a public transportation route | 
stomach n. principal organ of digestion | 
straight a. without a bend, angle, or curve; direct | 
strange a. not previously known, seen, felt, heard of, etc | 
stratosphere n. region of the uppermost atmosphere, extends from 15 kilometers to 50 kilometers approximately | 
stringent a. demanding strict attention to rules and procedures; binding; rigid | 
student n. a person who is studying at a school; pupil | 
studio n. workplace for the teaching or practice of an art | 
subdivision n. act of subdividing; an administrative division of larger organization  | 
subheading n. a heading of a subdivision of a text | 
submarine n. submersible warship; move forward or under in a sliding motion; underwater | 
submerge v. sink; immerse; put under water | 
submission n. act of submitting; act of yielding to power or authority; surrender of the person and power to the control or government of another; obedience | 
subordinate a. occupying lower rank; inferior; submissive | 
subscribe v. write underneath, as one's name; sign to a document; give consent to; promise to give, by writing one's name with the amount | 
subscription n. a payment for consecutive issues of a newspaper or magazine for a given period of time | 
substantial a. fairly large; in essentials; material; true or real; not imaginary; solidly built | 
substitute v. exchange; use something or someone instead of another thing or person | 
succeed v. attain success or reach a desired goal | 
suffering a. very unhappy; full of misery | 
suffrage n. vote given in the choice of a man for an office or trust; formal expression of an opinion; testimony; attestation; witness; approval | 
suitable a. appropriate to a purpose or an occasion | 
supply v. make something available to someone; provide | 
suppose v. accept as true or probable; imagine; assume | 
surprise n. a sudden unexpected event, fact, or thing | 
sustained a. continued;  maintained at length without interruption or weakening | 
sweater n. knitted garment covering the upper part of the body | 
symbol n. something used for or regarded as representing something else | 
tangerine a. of a strong reddish orange color | 
tangible a. able to be touched; real or concrete; palpable | 
technique n. practical method or art applied to some particular task; skillfulness | 
tenant n. occupant; one that pays rent to use land or building | 
Tennessee n. a state in east central United States | 
tenor n. continuous, unwavering course; exact meaning or actual wording of a document | 
tentative a. hesitant; not fully worked out or developed; experimental; not definite or positive | 
tenth a. coming next after the ninth and just before the eleventh in position | 
terminology n. vocabulary of technical terms used in a particular field, subject, science, or art | 
terrier n. any of several usually small short-bodied breeds originally trained to hunt animals living underground | 
terrified v. fill with terror; frighten greatly | 
theology n. science of God or of religion | 
thorough a. complete with regard to every detail; not superficial and not partial | 
thousandth a. the ordinal number of one thousand in counting order | 
threatening a. darkened by clouds | 
throughout ad. in every part; in or through all parts; during the entire time or extent | 
thunder n. sound which follows flash of lightning; discharge of electricity; loud noise | 
thus ad. as a result or consequence of this; therefore | 
tolerable a. capable of being borne or endured; supportable, either physically or mentally. | 
torrential a. pouring in abundance | 
tortoise n. usually herbivorous land turtles having clawed elephant-like limbs; worldwide in arid area except Australia and Antarctica | 
trace v. follow, discover; make a mark or lines on a surface | 
track n. any road or path affording passage | 
transfer n. shifting; conveyance or removal of something from one place, person, or thing to another | 
trilogy n. three-part novel; a set of three works with related subject | 
trinity n. three people considered as a unit | 
triple a. having three parts of the same type, or happening three times | 
trophy n. sign or memorial of victory raised on the field of battle | 
trouble n. difficulty or problems | 
trout n. flesh of any of several primarily freshwater game and food fishes | 
tumble v. fall down, as collapsing; fall quickly and without control | 
turquoise n. blue to gray green mineral consisting of copper aluminum phosphate | 
turtle n. any aquatic and land reptiles having a bony shell and flipper-like limbs for swimming | 
typhoon n. tropical cyclone occurring in the western Pacific; violent whirlwind | 
underline v. draw a line under a word | 
unicycle n. a vehicle like a bicycle with only one wheel | 
uniform n. a particular set of clothes for a particular group, like police | 
universe n. cosmos; everything that exists anywhere | 
unusual a. unexpected, slightly odd or even a bit weird | 
upsetting a. causing an emotional disturbance | 
Uranus n. (Greek mythology) god of the heavens; son and husband of Gaea and father of the Titans in ancient mythology | 
valley n. a low area of land between hills or mountains | 
vanish v. disappear; pass out of sight, especially quickly; die out | 
various a. different from one another; of different kinds or sorts | 
velvet a. resembling velvet in having a smooth soft surface | 
Venus n. type genus of the family Veneridae: genus of edible clams with thick oval shells | 
vertical a. upright in position or posture | 
victory n. successful ending of struggle or contest; defeat of an enemy or opponent | 
Virginia n. a state in the eastern United States, one of the original 13 colonies | 
virus n. disease communicator; something that poisons one's soul or mind; program for unwanted actions in computer | 
visual a. seen or able to be seen by the eye; visible; optical | 
vocabulary n. a language user's knowledge of words | 
volume n. capacity; amount of space occupied by an object | 
volunteer n. person who freely performs or offers to perform a service | 
voyage n. long journey to a foreign or distant place, especially by sea; aviation | 
walrus n. very large marine mammal of the seal family, native of the Arctic Ocean | 
Washington n. the capital of the United States | 
western n. situated in the west, or directed toward or facing the west | 
whisper n. speaking in a quiet voice; soft speech produced without full voice | 
winning a. having won | 
Wisconsin n. a midwestern state in north central United States | 
wolf n. any of various predatory carnivorous canine mammals of North America and Eurasia that usually hunt in packs | 
wonder v. doubt | 
wound n. a figurative injury (to your feelings or pride) | 
wrote v. (past tense) compose; mark letters, words, or other symbols on a surface | 
yeast n. foam, or troth, or the sediment, of beer or other in fermentation | 
zoology n. part of biology which relates to the animal kingdom |