Catch, capture, clasp, clutch, grip, secure.
Cause, consideration, design, end, ground, motive, object, reason, purpose.
Caution, discretion, prudence.
Censure, criticism, rebuke, reproof, reprimand, reproach.
Character, constitution, disposition, reputation, temper, temperament.
Characteristic, peculiarity, property, singularity, trait.
Chattering, garrulous, loquacious, talkative.
Cheer, comfort, delight, ecstasy, gayety, gladness, gratification, happiness, jollity, satisfaction.
Churlish, crusty, gloomy, gruff, ill-natured, morose, sour, sullen, surly.
Class, circle, clique, coterie.