Synonyms and related words :
Acheronian, Acherontic, Cimmerian, Stygian, addlebrained, addled, addleheaded, addlepated, adiaphanous, amorphous, angry, beclouded, befuddled, blind, castellatus, cirrose, cirrous, clear as mud, cloud-flecked, clouded, cumuliform, cumulous, cyclonic, dark, dark and gloomy, dim, dirty, dull, fogged, foggy, foul, fuddlebrained, fuddled, funereal, fuzzy, gloomful, glooming, gloomy, grumly, hazy, heavy, ill-lighted, ill-lit, impervious to light, in a fog, in a muddle, indeterminate, indistinct, intransparent, lenticularis, lowering, mammatus, misted, misty, mucky, muddled, muddleheaded, muddy, murky, mushy, muzzy, nebulous, nimbose, nubilous, obscure, opaque, overcast, overclouded, puzzleheaded, raging, rainy, roiled, roily, shadowy, shapeless, somber, sombrous, squally, storming, stormy, stratiform, stratous, tempestuous, thunderheaded, tornadic, transcendent, turbid, turbulent, typhonic, typhoonish, unclear, unplain, vague, vaporous, vapory