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  |  
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