adj. 25B6; adjective SULLEN, sulky, gloomy, bad-tempered, ill-tempered, dour, surly, sour, glum, moody, ill-humoured, melancholy, melancholic, doleful, miserable, depressed, dejected, despondent, downcast, unhappy, in low spirits, low, down, grumpy, irritable, churlish, cantankerous, crotchety, cross, crabby, grouchy, testy, snappish, peevish, crusty; informal blue, down in the dumps/mouth, fed up.
cheerful.