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1. Having an irritable and unpleasant disposition

See also: arsey [Brit, informal], atrabilious, bad-tempered, bilious, bristly, cantankerous, choleric, churlish, crabbed, crabby, cranky [informal], cross, crotchety, crusty, curmudgeonly, currish, dark, disagreeable, dour, dyspeptic, fractious, fussy, glowering, glum, grouchy [informal], gruff, grumpy, hotheaded, hot-tempered, huffish, ill-humored [US], ill-humoured [Brit, Cdn], ill-tempered, irascible, irritable, liverish, misanthropic, misanthropical, misogynistic, misogynous, moody, morose, nagging, narky [Brit, slang], nature, nettlesome, ornery [N. Amer, informal], peckish [N. Amer, informal], peevish, pettish, petulant, pouty, prickly, quick-tempered, saturnine, scratchy, shirty [Brit, informal], short-tempered, shrewish, snappish, snappy [informal], snorty [Brit, informal], sour, splenetic, spoiled, spoilt, sulky, sullen, surly, techy, testy, tetchy, ugly, unpleasant, vinegarish, vinegary, waspish

Antonym: good-natured