| conscious(adjective, familiar, wise, knowledgeable, witting) |
| conscripted(witting, versant, pansophic) |
| consequence(noun, activity, concern, attraction, curiosity) |
| consuetude(noun, characteristic, rule, practice, habit) |
| consumed(adjective, captivated, enthralled, submerged) |
| contra(preposition, near, toward) |
| controlled(adjective, desire, troubled, haunted) |
| conversant(adjective, sympathetic, witting, all-embracing, observative) |
| cool(adjective, familiar, wise, knowledgeable, informed) |
| cooped up(expression, witting, versant, pansophic) |
| copacetic(skillful, meritable, slighty) |
| cosmopolitan(adjective, refined, mature, worldly) |
| couth(adjective, refined, mature, disciplined, worldly) |
| crack(adjective, smart, competent, skillful, able) |
| crackerjack(adjective, smart, competent, skillful, able) |
| cranked up(expression, overwrought, worked-up, keyed-up) |
| crazed(adjective, enchanted, raving) |
| cultivated(adjective, cultured, well-educated) |
| cultured(adjective, well-educated) |
| cunning(skillful, meritable, slighty) |