abstract, abstruse, ambiguous, black, bleak, bleary, blur, blurring, blurry, cheerless, cloudiest,
cloudy, dark, dejected, diffuse, diffused, dim, disconsolate, dismal, dreary, dull, farouche, feculent, foggy, forbidding, glassy, gloomy, glum, grave, grim, hazy, indefinite, indescribable, indistinct, inexplicit, joyless, loom, lugubrious, lurid, misty, morose, mournful, muddy, nebulous, nonpayer, obscure, opaque, seamy, sepulchral, sombre, soupy, sullen, surly, tedious, turbid, unclear, undefined, unsettled, vague, vaguest, wishy-washy, woolly