Englishglum
adjective
Kenneth looked glum and resentful:
gloomy, downcast, downhearted, dejected, disconsolate, dispirited, despondent, crestfallen, cast down, depressed, disappointed, disheartened, discouraged, demoralized, desolate, heavy-hearted, in low spirits, low-spirited, sad, unhappy, doleful, melancholy, miserable, woebegone, mournful, forlorn, long-faced, fed up, in the doldrums, wretched, lugubrious, morose, sepulchral, saturnine, dour, mirthless;
informal blue, down, down in the mouth, down in the dumps;
British, informal brassed off, cheesed off, looking as if one had lost a pound and found a penny;
literary dolorous;
archaic chap-fallen, adust.
▷antonyms cheerful, merry.
glum Oxford Dictionary of English