abandon v. leave a place, thing, or person, usually for ever | 
abbreviation n. shortening something by omitting parts of it | 
abduction n. criminal act of capturing and carrying away by force | 
academic a. related to school; not practical or directly useful; relating to scholarly organization | 
academy n. an organization intended to protect and develop an art, science, language, etc. n. a school that teaches a particular subject or trains people for a particular job | 
acceptable a. satisfactory and able to be agreed to or approved of a. just good enough, but not very good | 
accessible a. easily approached or entered; obtainable; easy to talk to or get along with | 
acclaim v. applaud; give public approval and praise | 
accommodate v. do a favor or service for; provide for; supply with; make suitable | 
accompanist n. a person who provides musical accompaniment, usually on a piano | 
accomplice n. partner in crime; associate in wrongdoing | 
accomplishment n. achievement or fulfillment; something that is successful after a lot of work or effort | 
accountant n. one who maintains and audits business accounts | 
acquittal n. state of being found or proved not guilty; judgment of not guilty | 
adherent n. one who strongly supports something; one who follows or upholds a leader, party, cause | 
adolescence n. state of growing up from childhood to adult; transitional period between youth and maturity | 
adventurous a. willing to try new or difficult things; willing to engage in adventures | 
advertise v. give notice to; make something known in public, especially to sell it | 
algebra n. the mathematics of generalized arithmetical operations | 
alternate a. happening or following in turns; succeeding each other continuously; substitute | 
amphibian a. able to live both on land and in water | 
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 | 
antecedent n. someone from whom you are descended, but usually more remote than a grandparent n. a word or phrase that a pronoun refers back to | 
anthropology n. social science that studies origins and social relationships of human beings | 
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 | 
aqueduct n. a structure for carrying water across land, especially one like bridge that carries pipes or a canal across a valley | 
asterisk n. a symbol (*) shaped like a star | 
asteroid n. small planet; one of many large rocks that circle the sun | 
astrology n. study of the positions of stars, in the belief that stars affect the character and lives of people | 
astronomer n. a physicist who studies astronomy | 
astronomical a. enormously large or extensive; relating to astronomy | 
astronomy n. branch of physics that studies celestial bodies and universe as a whole | 
attendant n. aide or servant; someone whose job is to help others in a particular situation | 
audible a. heard or perceptible by the ear | 
audience n. group of people together in one place to watch or listen to a play, film, or speaking | 
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 | 
auditorium n. area of theater or concert hall where audience sits n. a large public building where meetings and concerts are held | 
aural a. relating to hearing or the ear | 
auxiliary a. giving help or support, especially to a more important person or thing | 
bachelor n. the first or lowest academic degree from colleges n. unmarried man | 
bacteria n. very small organisms that are found everywhere and are the cause of many diseases | 
badminton n. a sport in which two or four people hit a light object with feathers over a high net | 
bagel n. a type of bread that is small, hard, and in the shape of a ring | 
bayou n. an area of slowly moving water at the side of the main river | 
beige n. a light greyish brown color | 
bicentennial n. the 200th anniversary, or the celebration of it | 
bicycle n. a wheeled vehicle that has two wheels and is moved by foot pedals |