| Term | Definition |
| champion | support militantly |
| chaotic | in utter disorder |
| charisma | divine gift; great popular charm or appeal |
| charlatan | quack;pretender to knowledge |
| chary | cautious; sparing or restrained about giving |
| chase | ornament a metal surface by indenting |
| chasm | abyss |
| chassis | framework and working parts of an automobile |
| chaste | pure; virginal; modest |
| chasten | correct by punishment or scolding; restrain |
| chastened | humbled; subdued; rebuked |
| chastise | punish or scold, reprimand |
| chauvinist | blindly devoted patriot; zealous adherent of a group or cause |
| check | stop motion; curb or restrain |
| checkered | marked by changes in fortune |
| cherubic | angelic |
| chicanery | trickery; deception |
| chide | scold |
| chimerical | fantastically improbable; highly unrealistic; imaginative |
| chisel | swindle or cheat; cut with a chisel |
| chivalrous | courteous; faithful; brave |
| choleric | hot-tempered |
| choreography | art of representing dances in written symbols; arrangement of dances |
| chortle | chuckle with delight |
| chronic | long established, as a disease |
| chronicle | report; record in chronological order |
| churlish | boorish; rude |
| ciliated | having minute hairs |
| cipher | nonentity; worthless person or thing |
| cipher | secret code |
| circlet | small ring; band |
| circuitous | roundabout |
| circumlocution | unnecessarily wordy and indirect speech; evasive language |
| circumscribe | limit narrowly; confine or restrict; define |
| circumspect | prudent; cautious |
| circumvent | outwit; baffle |
| cistern | reservoir of water tank |
| citadel | fortress |
| cite | quote; comment |
| civil | having to do with citizens or the state; courteous and polite |
| clairvoyant | having foresight; fortuneteller |
| clamber | climb by crawling |
| clamor | noise |
| clandestine | secret |
| clangor | loud, resounding noise |
| clapper | striker (tongue) of a bell |
| clarion | shrill, trumpet like sound |
| claustrophobia | fear of being locked in |
| clavicle | collarbone |
| cleave | split or server; cling to; remain faithful to |
| cleft | split |
| clemency | disposition to be lenient; mildness as of the weather |
| cliche | phrase dulled in meaning by repetition |
| clientele | body of customers |
| climactic | relating to the highest point |
| clime | region |
| clique | small exclusive group |
| cloister | monastery or convent |
| clout | great influence (esp. political or social) |
| cloying | distasteful (because excessive; excessively sweet or sentimental |
| coagulate | thicken; congeal; clot |
| coalesce | combine; fuse |
| coalition | partnership; league; union |
| coda | concluding section of a musical or literary composition; something that rounds out, summarizes or concluding |
| coddle | treat gently; pamper |
| codicil | supplement to the body of will |
| coercion | use of force to get someone to obey |
| coeval | living at the same time as; contemporary |
| cogent | convincing |
| cogitate | think over |
| cognate | related linguistically; allied by blood; similar or akin in nature |
| cognitive | having to do with knowledge or perceiving related to the mental process |
| cognizance | knowledge |
| cohabit | live together |
| cohere | stick together |
| cohesion | tendency to keep together |
| cohorts | armed band |
| coiffure | hairstyle |
| coin | make coins; invent or fabricate |
| coincidence | the chance occurrence, at the same time, of two or more seemingly connected events |
| colander | utensil with perforated bottom used for straining |