Thesaurus

Acheronian, Acherontic, adust, African-American, Afro-American, aphotic, atrabilious, atrocious, bad, bad-tempered, benighted, bilious, black, black-haired, blue, bristly, bronzed, brown, brown-haired, browned, brunet, brunette, bushwhacking, caliginous, cantankerous, cheerless, choleric, churlish, Cimmerian, colored, coloured, concealed, corruptive, covert, crabbed, crabby, cranky, crepuscular, cross, crotchety, crusty, curmudgeonly, currish, dark, dark-haired, dark-skinned, darkened, darkening, darkish, darkling, dead, demonic, depressing, despicable, devilish, diabolic, diabolical, dim, dingy, disagreeable, disconsolate, dismal, dispiriting, dour, drab, drear, dreary, dull, dusky, dyspeptic, enigmatic, enigmatical, evil, evil-minded, fiendish, flagitious, fractious, furtive, fussy, gloomful, glooming, gloomy, glowering, glum, grievous, grim, grizzled, grouchy, gruff, grumpy, heinous, hellish, hidden, hot-tempered, hotheaded, huffish, idle, ill-humored, ill-humoured, ill-natured, ill-tempered, immoral, impenetrable, inactive, incognito, incomprehensible, indecipherable, inexplicable, infernal, irascible, irritable, joyless, lightless, liverish, lost, lying in wait, melancholy, mephistophelean, mephistophelian, misanthropic, misanthropical, misogynous, missed, monstrous, moody, morose, nagging, negro, negroid, nettlesome, non-white, nutbrown, obscure, offensive, opaque, ornery, peckish, peevish, perversive, pestiferous, pettish, petulant, pitch-black, pitch-dark, prickly, puzzling, quick-tempered, satanic, saturnine, scratchy, sealed, secret, semidark, shirty, short-tempered, shrewish, sinister, slimy, slow, sluggish, snappish, snappy, sneak, sneaking, sneaky, snorty, somber, sombre, sorry, sour, splenetic, spoiled, spoilt, stealthy, strikebound, Stygian, subdued, sulky, sullen, suntanned, surly, surreptitious, swart, swarthy, tanned, techy, tenebrific, tenebrious, tenebrous, testy, tetchy, twilight, twilit, ugly, unavowed, uncheerful, unclear, uncomprehensible, uneducated, unenlightened, unfathomable, unhappy, unholy, unilluminated, uninformed, unintelligible, unlighted, unlit, unpleasant, unrighteous, unused, unworthy, vile, vinegarish, vinegary, waspish, wicked, worthless, wretched, wrong

dark is a ADJ.

dark, darkness, iniquity, night, nighttime, shadow, wickedness

dark is a NOUN.