Synonyms and related words :
autistic, bad, bashful, beetle-browed, black, black-browed, blue, brooding, broody, cast down, chapfallen, close, crestfallen, dark, dejected, depressed, dispirited, dissociable, dour, down, dumpish, frowning, glowering, glum, grim, grum, incompatible, insociable, long-faced, low, lowering, melancholy, moodish, moody, moping, mopish, morose, mumpish, nongregarious, scowling, self-contained, self-sufficient, snug, socially incompatible, spiritless, sulky, sullen, surly, unclubbable, uncommunicative, uncompanionable, uncongenial, unfriendly, ungenial, unsociable, unsocial