chronic a. lasting for long period;  marked by frequent recurrence, as certain diseases | 
circumspect a. carefully aware of all circumstances; cautious | 
clarion n. a shrill, narrow-tubed war trumpet; a medieval brass instrument with a clear shrill tone | 
clemency n. mildness, as of the weather; merciful, kind, or lenient act | 
clientele n. clients of professional person; body of customers or patrons | 
cognizant a. having or showing knowledge or understanding or realization or perception | 
colleague n. fellow worker; associate; co-worker | 
collegiate a. of or resembling or typical of a college or college students | 
communicable a. capable of being transmitted by infection, especially for disease; readily communicated | 
complicity n. participation; involvement as partner or accomplice, especially in crime or other wrongdoing | 
component n. element; ingredient; abstract part of something | 
compression n. applying pressure; encoding information while reducing the bandwidth or bits required | 
concept n. something formed in the mind; thought or notion | 
conclusive a. decisive or convincing; achieved easily or by a large margin | 
concord n. agreement of opinions; harmonious state of things | 
concurrence n. a state of cooperation;  agreement of results or opinions; acting together | 
concurrent a. simultaneous; coincident; occurring or operating at the same time | 
condone v. excuse, overlook, or make allowances for; be lenient with | 
confound v. cause to become confused or perplexed; fail to distinguish; mix up | 
conjure v. call on or summon by sacred name or in solemn manner; implore earnestly; practice magical arts | 
consecrate v. appoint to a clerical posts; dedicate to a deity by a vow; render holy by means of religious rites | 
consul n. a diplomat appointed by a government to protect its commercial interests and help its citizens in a foreign country | 
consultant n. an expert who gives advice  | 
contemptuous a. scornful; expressing contempt; showing a lack of respect | 
contentious a. quarrelsome; disagreeable; marked by heated arguments or controversy | 
continuance n. an activity without interruption; the period of time during which something continues | 
contradictory a. nature of, or being a contradiction; mutually exclusive; opposing | 
conveyance n. act of conveying; tools of conveying, especially vehicle for transportation | 
convivial a. festive; occupied with or fond of the pleasures of good company | 
convulsion n. unnatural and violent contraction of the muscular parts of an animal body; any violent and irregular motion or agitation; violent shaking; tumult | 
cosmic a. pertaining to the universe; vast | 
covert a. secretive; not openly acknowledged or displayed | 
credentials n. a document attesting to the truth of certain stated facts | 
creditor n. a person to whom money is owed by a debtor; someone to whom an obligation exists | 
crucial a. of extreme importance; vital to the resolution of a crisis; of the greatest importance | 
crypt n. a cellar or vault or underground burial chamber, especially beneath a church | 
culminate v. reach the highest or most decisive point;  rise to summit | 
cumulative a. increasing by successive addition | 
curtail v. cut short or reduce; cut off end or tail, or any part | 
curvature n. the rate of change at a point of the angle between a curve and a tangent to the curve; a curving or bending, often abnormal | 
cynic n. a person who believes that people are motivated purely by self-interest rather than acting for honorable or unselfish reasons | 
cynical a. skeptical of motives of others; selfishly calculating; negative or pessimistic | 
daunt v. frighten; abate the courage of; discourage | 
dearth n. scarcity; shortage of food; famine from failure or loss of crops | 
debit n. an accounting entry acknowledging sums that are owing | 
debutante n. young woman making formal entrance into society | 
decorous a. according with propriety, dignity, good taste in manners and conduct | 
default n. failure to act; an option that is selected automatically | 
deference n. willingness to carry out the wishes of others; great respect | 
deficient a. inadequate; lacking an essential quality or element | 
defile v. pollute; make dirty or spotty | 
definitive a. final; complete; precisely defined or explicit | 
deflation n. a contraction of economic activity resulting in a decline of prices; the act of letting the air out of something | 
deft a. quick and skillful; neat in action or performance | 
deity n. god; divinity; supernatural things | 
delineate v. portray; depict; draw or trace outline of; sketch out | 
delve v. dig ground, as with spade; search deeply and laboriously | 
demented a. insane; mad; of unsound mind; mentally ill | 
demolition n. act of overthrowing, pulling down, or destroying | 
demoralize v. corrupt morally or by intemperance or sensuality; lower someone's spirits; make downhearted; confuse or put into disorder | 
demure a. modest and reserved in manner or behavior | 
denigrate v. blacken; defame; attack reputation of; degrade |