Synonyms and related words :
arbitrariness, bouderie, caprice, capriciousness, crankiness, crotchetiness, dejection, desultoriness, deviability, dumpishness, eccentricity, erraticism, fancifulness, fantasticality, fickleness, flightiness, freakishness, glumness, grimness, grumness, humorsomeness, impulsiveness, inconsistency, inconstancy, instability, irregularity, melancholy, mercuriality, moodishness, mopishness, moroseness, motivelessness, petulance, quirkiness, restlessness, shiftiness, sulkiness, sullenness, surliness, temperamentalness, uncertainty, undependability, unfixedness, unpredictability, unreliability, unsettledness, unstableness, unsteadfastness, unsteadiness, variability, variation, variety, wantonness, waywardness, whimsicality, whimsicalness, whimsy