Englishgloomy
adjective
1 a gloomy room filled with mahogany furniture:
dark, ill-lit, poorly lit, shadowy, sunless, dim, sombre, dingy, frowzy, drab, dismal, dreary, murky, depressing, unwelcoming, uninviting, cheerless, joyless, comfortless, funereal;
grey, leaden, overcast, cloudy;
literary crepuscular, tenebrous;
rare Stygian, Tartarean, caliginous, subfusc.
▷antonyms bright, sunny, well lit.
2 Joanna looked gloomy | his gloomy expression:
despondent, downcast, downhearted, dejected, disconsolate, dispirited, crestfallen, cast down, depressed, disappointed, disheartened, discouraged, demoralized, desolate, heavy-hearted, in low spirits, low-spirited, sad, unhappy, glum, full of gloom, doleful, melancholy, miserable, woebegone, mournful, sorrowful, forlorn, long-faced, fed up, in the doldrums, subdued, wretched, lugubrious, Eeyorish, morose, sepulchral, saturnine, dour, mirthless, woeful;
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 happy, cheerful.
3 gloomy forecasts about the economy:
pessimistic, depressing, downbeat, looking on the black side, disheartening, disappointing, dispiriting, unpromising, unfavourable, bleak, bad, dark, black, sombre, melancholy, saddening, distressing, grim, cheerless, comfortless, hopeless.
▷antonyms optimistic, upbeat.
gloomy Oxford Dictionary of English