Thesaurus

Synonyms for Gloomy include:

abject, Acheronian, Acherontic, amort, aphotic, bittersweet, black, bleak, blue, caliginous, chapfallen, cheerless, chopfallen, Cimmerian, crepuscular, crestfallen, dark, darkened, darkening, darkling, deflated, dejected, depressed, depressing, depressive, despairing, desperate, despondent, dim, dingy, disconsolate, discouraging, dismal, dispirited, dispiriting, distressed, doleful, down, down in the mouth, downcast, downhearted, drab, drear, dreary, dusky, dysphoric, forlorn, futureless, gloomful, glooming, gloomy, glum, grim, heartsick, heavyhearted, helpless, hopeless, impossible, insoluble, joyless, lightless, lonely, lonesome, long-faced, lost, low, low-spirited, melancholic, melancholy, mournful, pensive, pessimistic, pitch-black, pitch-dark, resigned, sad, saddening, semidark, somber, sombre, sorry, Stygian, subdued, sulky, tenebrific, tenebrious, tenebrous, tragic, tragical, tragicomic, tragicomical, twilight, twilit, uncheerful, unhappy, unhopeful, unilluminated, unlighted, unlit, wistful

gloomy is a ADJ.