moody

adj

1. gloomy, unhappy, down in the dumps, down in the mouth, in the doldrums; out of sorts, Both Inf. off feed, off one's feed; downcast, crestfallen, chapfallen, discouraged, heavy-hearted, down-hearted, miserable; cheerless, glum, dour, lugubrious; grim, frowning, sullen, sulky; morose, splenetic, saturnine, mopish, dismal, melancholy, dispirited, sad, desolate; disheartened, comfortless, disconsolate, doleful, atrabilious.

2. temperamental, irritable, ill-humored, snappish, snappy, huffish, huffy, curt, short, impatient; piqued, in a pique, in a fume, Inf. in a stew; touchy, testy, thin-skinned, waspish, peevish, petulant; irascible, choleric, ill-tempered; crabby, crabbed, cranky, grouchy, grumpy, cantankerous, crotchety, crusty; hurt, wounded, injured, sore, offended, indignant; angry, irate, in high dudgeon, worked up.

3. capricious, impulsive, fickle, skittish, inconstant, moonish, changeable, changeful, variable, faddish; flighty, mercurial, volatile, unsteady, unstable; fitful, erratic, irregular, spasmodic, uneven; irresolute, uncertain, indecisive, undecided, vacillating, wavering, infirm of purpose.