dark

[1]	darkness
[2]	iniquity , wickedness , darkness
[3]	darkness , shadow
[4]	night , nighttime
[5]	darkness
[6]	night , night-time , nightfall
[7]	darkness , blackness , gloom , gloominess , murk , murkiness
[8]	obscurity , ignorance

adj.

[1]	unlit , unlighted , unilluminated , ill-lighted , ill-lit , sunless , black , Stygian , pitch-dark , inky , jet-black
[2]	dim , murky , tenebrous , shady , shadowy
[3]	gloomy , dismal , dreary , dull , drab , subfuscous , subfusc , bleak , cheerless , mournful , dour , pessimistic , sombre , doleful , joyless , grim , sad , melancholy , sorrowful
[4]	evil , wicked , vile , base , foul , iniquitous , nefarious , black-hearted , villainous , sinister , satanic , devilish , hellish
[5]	murky , overcast , cloudy , threatening , black , dusky , louring/lowering , foggy , misty , (US) glowering
[6]	mysterious , deep , profound , incomprehensible , enigmatic , puzzling , impenetrable , unfathomable , abstruse , recondite , arcane , obscure
[7]	hidden , concealed , secret , occult , mystic(al) , cryptic
[8]	brunette , black , swarthy , brown , (sun)tanned , (Old-fashioned) swart
[9]	ignorant , black , sinister , unenlightened , benighted
[10]	dour , glowering , glum , moody , morose , saturnine , sour , sullen
[11]	benighted
[12]	obscure
[13]	blue , dingy , disconsolate , dismal , gloomy , grim , sorry , drab , drear , dreary
[14]	colored , coloured , dark-skinned , non-white