Synonyms and related words :
Stygian, beamless, black, black as night, caliginous, cheerless, dark, dark as night, dark as pitch, darkling, darksome, depressing, drear, dreary, dusky, ebon, ebony, eclipsed, funereal, gloomy, grey, grim, inky, joyless, night-black, night-clad, night-cloaked, night-dark, night-enshrouded, night-filled, night-mantled, night-veiled, obfuscated, obscure, obscured, occulted, pitch-black, pitch-dark, pitchy, rayless, shadowy, starless, subfusc, tenebrious, tenebrose, tenebrous, unhappy, unilluminated, unlighted, unlit