| chastise | to criticize severely |
| chimerical | absurd |
| chronic | lasting a long time |
| circumspect | careful |
| clairvoyant | having good eyesight |
| clandestine | secret |
| clemency | mercy |
| coalesce | to combine |
| colloquial | used in informal speech |
| commiserate | to feel bad for another's suffering |