Congenital : Innate, inborn, natural
Conceal : Hide, disguise, cloak
Compliance : Obedience, submission
Compel : Force, oblige
Commotion : Bustle, tumult
Comely : Attractive, Appealing
Colossal : Mammoth, huge
Churlish : Sullen, Surly, rude
Chafe : Annoy, harass, vex
Clemency : Kindness, Tenderness
Coddle : Pamper, cosset
Castigate : Criticize, Censure
Censorious : Critical, Nagging
Convivial : Sociable, Jovial, amicable
Corroborate : Confirm, substantiate
Contempt : Disdain, Insult
Covet : Desire, want
Coy : Shy, reticent, reserved
Craven : Cowardly, Timid
Crafty : Cunning, Deceitful