Word: gloomiest

dark, shadowy, sunless, dim, somber, dingy, dismal, dreary, murky, unwelcoming, cheerless, comfortless, funereal, Stygian, despondent, downcast, downhearted, dejected, dispirited, disheartened, discouraged, demoralized, crestfallen, depressed, desolate, low, sad, unhappy, glum, melancholy, miserable, woebegone, mournful, forlorn, morose, blue, down in/at the mouth, down in the dumps, dolorous, pessimistic, depressing, downbeat, disheartening, disappointing, unfavorable, bleak, bad, black, grim, hopeless, down in the mouth, low-spirited, down, sulky, sorry, drear, drab, disconsolate