| Term | Definition |
| carrion | dead and decaying fish |
| castigate | to punish or criticize severely |
| cataclysm | a violent change or upheaval |
| catharsis | an act of purging or purification |
| censure | to criticize sharply |
| centrifuge | moving away from the center |
| chaff | worthless matter |
| chagrin | embarrassment |
| charlatan | fraud, faker |
| chaste | morally pure |
| chauvinism | fanatical patriotism |
| chattel | slave, bondman |
| chicanery | trickery, deception |
| chide | to scold |
| chimerical | fantastic, imaginary |
| chronicle | record of history |
| circumspect | watchful |
| citadel | a fortress commanding a city |
| civility | politeness, courtesy |
| clandestine | held in or conducted with secrecy |
| claret | a dark red |
| clime | climate |
| coerce | to force |
| coffer | a chest or box used |
| cogent | convincing |
| cogitate | think, ponder, meditation |
| cognate | related |
| cognizant | awareness |
| collate | to assemble in proper order |
| collusion | secret agreement to defraud another |
| commensurate | proportional |
| commissary | a store for equipment and provisions |
| commodious | comfortably spacious |
| complacent | contented |
| compunction | remorse, a feeling of regret |
| concatenation | to link together in a series |
| conclave | a private gathering |
| concomitant | accompanying, attending |
| condolence | to express sympathetic sorrow |
| configuration | arrangement: shape |
| congeal | freeze, solidify |
| congenital | existing from birth |
| congruent | agreeing |
| coniferous | bear cones |
| conjecture | guess |
| connote | to suggest; imply |
| connubial | of or relating to marriage |
| conscript | to force into service |
| consort | partner, companion (husband or wife) |
| consternation | amazed dismay and confusion |