Synonyms and related words :
arbitrariness, bee, boutade, capriccio, capriciousness, carelessness, characteristic, conceit, contrariety, crank, crankiness, crotchet, crotchetiness, divertissement, fancifulness, fancy, fantasia, fantasticality, foible, freak, freakishness, habit, heedlessness, humor, humoresque, humorsomeness, inconsiderateness, inconsideration, inconsistency, maggot, mannerism, medley, megrim, mood, moodiness, motivelessness, notion, peculiarity, perversity, petulance, potpourri, quirkiness, romance, romanza, temper, temperamentalness, thoughtlessness, trait, trick, unthoughtfulness, vagary, vein, whim, whimsicality, whimsicalness, whimsy