Synonyms and related words :
Acheronian, Acherontic, Cimmerian, Lethean, Plutonian, Plutonic, Tartarean, chthonian, chthonic, clouded, cloudy, dark and gloomy, devilish, funereal, gloomful, glooming, gloomy, hellborn, hellish, ill-lighted, ill-lit, infernal, lowering, overcast, pandemoniac, pandemonic, purgatorial, somber, sombrous, stormy, sulfurous