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