| A | B |
| consensus | a general agreement or opinion; a majority opinion |
| consonant | in agreement or in accord; harmonious; any letter of the alphabet that is not a vowel |
| contraband | smuggled goods |
| contrition | remorse for wrongdoing; repentance; sorrow for one's sins |
| convivial | fond of eating and drinking with friends; festive; social |
| correlate | something that follows once something else has been proven; a natural consequence; a result; to bring or put into complementary relation to each other; to relate |
| credence | belief; acceptance as valid or true |
| debacle | a sudden collapse or overthrow; an overwhelming defeat; a rout |
| debonair | graceful; charming, and smooth; carefree |
| decadence | a process, condition, or period of decline or decay; deterioration; moral decay |