cog (n.) Look up cog at Dictionary.com
c.1300, "cog wheel;" late 14c., "tooth on a wheel," probably a borrowing from a Scandinavian language (compare Norwegian kugg "cog") and cognate with Middle High German kugel "ball."
cogency (n.) Look up cogency at Dictionary.com
1680s, from cogent + -cy.
cogenial (adj.) Look up cogenial at Dictionary.com
1774, variant of congenial.
cogent (adj.) Look up cogent at Dictionary.com
1650s, from French cogent "necessary, urgent" (14c.), from Latin cogentem (nominative cogens), present participle of cogere "to curdle; to compel; to collect," literally "to drive together," from com- "together" (see co-) + agere "to drive" (see act (n.)).
cogitate (v.) Look up cogitate at Dictionary.com
late 16c., from Latin cogitatus, past participle of cogitare "to think" (see cogitation). Related: Cogitated; cogitating.
cogitation (n.) Look up cogitation at Dictionary.com
c.1200, "thought, idea, notion," from Old French cogitacion "thought, consideration, reflection," from Latin cogitationem (nominative cogitatio), noun of action from past participle stem of cogitare "to think, reflect, consider, turn over in the mind," apparently from co-agitare, from com- "together" (see co-) + agitare, here in a sense of "to turn over in the mind," literally "to put in constant motion, drive, impel," frequentative of agere "to move, drive" (see agitation).
cogitative (adj.) Look up cogitative at Dictionary.com
late 15c., from Old French cogitatif (14c.), from Medieval Latin cogitativus, from Latin cogitare (see cogitation).
cognac (n.) Look up cognac at Dictionary.com
1590s, Coniacke, "wine produced in Cognac," the region in western France. The sense of "brandy" is 1755, shortened from 17c. cognac brandy, which was distilled from cognac wine. The place name is from Medieval Latin Comniacum, from the personal name Cominius and the Gallo-Roman suffix -acum.
cognate (adj.) Look up cognate at Dictionary.com
1640s, from Latin cognatus "of common descent," from com- "together" (see co-) + gnatus, past participle of gnasci, older form of nasci "to be born" (see genus). Words that are cognates are cousins, not siblings. As a noun, from 1754.
cognisance (n.) Look up cognisance at Dictionary.com
alternative spelling of cognizance (q.v.); also see -ize.
cognisant (adj.) Look up cognisant at Dictionary.com
alternative spelling of cognizant (q.v.); also see -ize.
cognition (n.) Look up cognition at Dictionary.com
mid-15c., "ability to comprehend," from Latin cognitionem (nominative cognitio) "a getting to know, acquaintance, knowledge," noun of action from past participle stem of cognoscere (see cognizance).
cognitive (adv.) Look up cognitive at Dictionary.com
1580s, from Latin cognit-, past participle stem of cognoscere (see cognizance) + -ive. Taken over by psychologists and sociologists after c.1940. Related: Cognitively.
cognitive dissonance (n.) Look up cognitive dissonance at Dictionary.com
1957, developed and apparently coined by U.S. social psychologist Leon Festinger (1919-1989).
cognizable (adj.) Look up cognizable at Dictionary.com
1670s, "capable of being known," also "liable to be tried in a given court or jurisdiction," from stem of cognizance + -able.
cognizance (n.) Look up cognizance at Dictionary.com
mid-14c., from Anglo-French conysance "recognition," later, "knowledge," from Old French conoissance "acquaintance, recognition; knowledge, wisdom" (Modern French connaissance), from past participle of conoistre "to know," from Latin cognoscere "to get to know, recognize," from com- "together" (see co-) + gnoscere "to know" (see notice (n.)). The -g- was restored in English spelling 15c. and has gradually affected the pronunciation, which was always "con-." The old pronunciation lingered longest in legal use.
cognizant (adj.) Look up cognizant at Dictionary.com
1820, back-formation from cognizance.
cognize (v.) Look up cognize at Dictionary.com
1650s, back-formation from cognizance. Related: Cognized; cognizing.
cognomen (n.) Look up cognomen at Dictionary.com
1809, from Latin com- "with" (see co-) + (g)nomen "name" (see name (n.)). Third or family name of a Roman citizen (Caius Julius Cæsar).
cognoscence (n.) Look up cognoscence at Dictionary.com
mid-15c., from Latin cognoscere "to know" (see cognizance).
cognoscente (n.) Look up cognoscente at Dictionary.com
"connoisseur," 1778, from Italian cognoscente, Latinized from conoscente "connoisseur," literally "knowing man," from Latin cognoscentum (nominative cognoscens), present participle of cognoscere "to know" (see cognizance).
cognoscenti (n.) Look up cognoscenti at Dictionary.com
plural of cognoscente (q.v.).
cohabit (v.) Look up cohabit at Dictionary.com
euphemism since 1530s to describe a couple living together without benefit of marriage; back-formation from cohabitation. Related: Cohabited; cohabiting.
cohabitate (v.) Look up cohabitate at Dictionary.com
1630s, from Late Latin cohabitatus, past participle of cohabitare (see cohabitation). Related: Cohabitated; cohabitating.
cohabitation (n.) Look up cohabitation at Dictionary.com
mid-15c., "action or state of living together (especially as husband and wife)," from Middle French cohabitation (Old French cohabitacion "cohabitation, sexual intercourse"), from Late Latin cohabitationem (nominative cohabitatio), noun of action from past participle stem of cohabitare "to dwell together," from co- "with, together" (see co-) + habitare "to live, dwell" (see habitat).
Cohen Look up Cohen at Dictionary.com
Jewish surname indicating priestly descent, from Hebrew kohen "priest," from base of kihen "he acted as priest," related to Arabic kahana "he divined, prophesied."
cohere (v.) Look up cohere at Dictionary.com
1590s, from Latin cohaerere "to cleave together," in transferred use, "be coherent or consistent," from com- "together" (see co-) + haerere "to stick" (see hesitation). Related: Cohered; cohering.
coherence (n.) Look up coherence at Dictionary.com
late 16c., from Middle French cohérence (16c.), from Latin cohaerentia, noun of state from cohaerentem (see coherent). Related: Coherency.
coherent (adj.) Look up coherent at Dictionary.com
1550s, from Middle French cohérent (16c.), from Latin cohaerentem (nominative cohaerens), present participle of cohaerere "cohere," from com- "together" (see co-) + haerere "to stick" (see hesitation).
cohesion (n.) Look up cohesion at Dictionary.com
1670s, from French cohésion, from Latin cohaesionem (nominative cohaesio) "a sticking together," noun of action from past participle stem of cohaerere "to stick together" (see cohere).
cohesive (adj.) Look up cohesive at Dictionary.com
c.1730 (implied in cohesiveness), from Latin cohaes-, past participle stem of cohaerere (see cohere) + -ive. Related: Cohesively.
cohort (n.) Look up cohort at Dictionary.com
early 15c., "company of soldiers," from Middle French cohorte (14c.) and directly from Latin cohortem (nominative cohors) "enclosure," meaning extended to "infantry company" in Roman army (a tenth part of a legion) through notion of "enclosed group, retinue," from com- "with" (see co-) + root akin to hortus "garden," from PIE *ghr-ti-, from root *gher- (1) "to grasp, enclose" (see yard (n.1)). Sense of "accomplice" is first recorded 1952, American English, from meaning "group united in common cause" (1719).
coif (n.) Look up coif at Dictionary.com
late 13c., "close-fitting cap," from Old French coife "skull-cap, cap worn under a helmet, headgear" (12c., Modern French coiffe), from Late Latin coifa "a cap, hood" (source of Italian cuffia, Spanish cofia, escofia), of West Germanic origin (compare Old High German kupphia, Middle High German kupfe "cap").
coif (v.) Look up coif at Dictionary.com
mid-15c., "to cover with a cap," from Middle French coiffer, from Old French coife (see coif (n.)); sense of "to arrange the hair" is attested in English from 1835. Related: Coifed; coifing.
coiffeur (n.) Look up coiffeur at Dictionary.com
1847, from French coiffeur "hairdresser," from coiffer "to dress hair," from Old French coife, originally, "inner part of the helmet" (see coif (n.)). A woman hairdresser would be properly a coiffeuse.
coiffure (n.) Look up coiffure at Dictionary.com
"style or fashion of wearing the hair," 1630s, from French coiffure, from coiffer (see coiffeur).
coign (n.) Look up coign at Dictionary.com
archaic spelling of quoin (q.v.), surviving only in Shakespeare's coign of vantage ("Macbeth" I.vi.), popularized by Sir Walter Scott, properly "a projecting corner" (for observation).
coil (v.) Look up coil at Dictionary.com
"to wind," 1610s, from Middle French coillir "to gather, pick," from Latin colligere "to gather together" (see collect). Meaning specialized perhaps in nautical usage. Related: Coiled; coiling.
coil (n.) Look up coil at Dictionary.com
1620s, from coil (v.). Related: Coils.
coin (n.) Look up coin at Dictionary.com
c.1300, "a wedge," from Old French coing (12c.) "a wedge; stamp; piece of money; corner, angle," from Latin cuneus "a wedge." The die for stamping metal was wedge-shaped, and the English word came to mean "thing stamped, a piece of money" by late 14c. (a sense that already had developed in French). Compare quoin, which split off from this word 16c. Modern French coin is "corner, angle, nook." Coins were first struck in western Asia Minor in 7c. B.C.E.; Greek tradition and Herodotus credit the Lydians with being first to make and use coins of silver and gold.
coin (v.) Look up coin at Dictionary.com
"to coin money," mid-14c., from coin (n.). Related: Coined; coining. To coin a phrase is late 16c. A Middle English word for minter was coin-smiter.
coinage (n.) Look up coinage at Dictionary.com
late 14c., "currency, money," from Old French coignage, from coignier "to coin" (see coin (n.)). Meaning "act or proces of coining money" is from early 15c.; sense "deliberate formation of a new word" is from 1690s, from a general sense of "something invented" (c.1600).
coincide (v.) Look up coincide at Dictionary.com
1715, from French coincider (14c.), from Medieval Latin coincidere (in astrological use), literally "to fall upon together," from Latin com- "together" (see co-) + incidere "to fall upon" (in- "upon + cadere "to fall;" see case (n.1)). Related: Coincided; coinciding.
coincidence (n.) Look up coincidence at Dictionary.com
c.1600, "exact correspondence," from French coincidence, from coincider (see coincide). Meaning "a concurrence of events with no apparent connection" is from 1680s.
coincident (adj.) Look up coincident at Dictionary.com
late 16c., from French coincident, from coincider (see coincide).
coincidental (adj.) Look up coincidental at Dictionary.com
c.1800, from coincident + -al (1).
coincidentally (adv.) Look up coincidentally at Dictionary.com
1837, from coincidental + -ly (2).
coincidently Look up coincidently at Dictionary.com
1620s, from coincident + -ly (2).
Cointreau (n.) Look up Cointreau at Dictionary.com
orange-flavored liqueur, named for founders Adolphe and Edouard-Jean Cointreau, brothers from Angers, France, who set up Cointreau Distillery in 1849. The orange liqueur dates from 1875.
coir (n.) Look up coir at Dictionary.com
"prepared coconut fiber," 1580s, from Malayalam kayar "cord," from kayaru "to be twisted."