| Term | Definition |
| cacophony | tremendous noise, disharmonious sound |
| cadence | a rhythm, progression of sound |
| cajole | to urge, coax |
| calamity | an event with disastrous consequences |
| calibrate | to set, standardize |
| callous | harsh, cold, unfeeling |
| calumny | an attempt to spoil someone else's reputation by spreading lies |
| camaraderie | brotherhood, jovial unity |
| candor | honesty, frankness |
| canny | shrewd, careful |
| canvas | 1.a piece of cloth on which an artist paints 2.to cover, inspect |
| capacious | very spacious |
| capitulate | to surrender |
| capricious | subject to whim, fickle |
| captive | to get the attention of, hold |
| carouse | to party, celebrate |
| carp | to annoy, pester |
| catalog | 1.to list, enter into a list 2.a list or collection |
| catalyze | to charge, inspire |
| caucus | a meeting usually held by people working toward the same goal |
| credulity | readiness to believe |
| crescendo | a steady increase in intensity or volume |