Synonyms and related words :
beetle-browed, black, black-browed, brooding, broody, chapfallen, crestfallen, dark, dejected, dour, dumpish, frowning, glowering, glum, grim, grum, long-faced, lowering, melancholy, moodish, moody, mopey, mopish, morose, mumpish, scowling, sulky, sullen, surly