dour, gloomy, morose

choleric, crabby, cranky, cross, crotchety, grouchy, grumpy, irascible, irritable, peevish, perverse, pettish, petulant, prickly, quick-tempered, raspy, ratty, short-tempered, snappish, snappy, snarky, snippety, snippy, testy, waspish

brooding, moping

bearish, bilious, cantankerous, disagreeable, dyspeptic, ill-humored, ill-natured, ill-tempered, ornery

huffy, sensitive, temperamental, tetchy, thin-skinned, touchy