| Term | Definition |
| clemency | mercy |
| clergy | members of Christian holy orders |
| cloying | sickeningly sweet |
| coagulate | to thicken, clot |
| coalesce | to fuse into a whole |
| cobbler | a person who makes or repairs shoes |
| coerce | to make somebody do something by force or threat |
| cogent | intellectually convincing |
| cognizant | aware, mindful |
| coherent | logically consistent, intelligible |
| collateral | 1.secondary 2.security for a debt |
| colloquial | characteristic of informal conversation |
| collusion | secret agreement, conspiracy |
| colossus | a gigantic statue or thing |
| combustion | the act or process of burning |
| commendation | a notice of approval or recognition |
| commensurate | corresponding in size or amount |
| commodious | roomy |
| compelling | forceful, demanding attention |
| compensate | to make an appropriate payment for something |
| culpable | deserving blame |
| cultivate | to nurture, improve, refine |