THESAURUS
blacken
abuse, asperse, attaint, bark at, becloud, bedarken, bedaub, bedim, begloom, begrime, berate, besmear, besmirch, besmoke, besmutch, besoil, bespatter, bestain, betongue, black, black out, blackwash, block the light, blot, blot out, blotch, blow upon, blur, brand, brown, call names, cast a shadow, cast aspersions on, censure, charcoal, cloud, cloud over, cork, darken, darken over, daub, defame, defile, denigrate, dim, dim out, dinge, dirty, disapprove, discolor, discredit, disparage, ebonize, eclipse, encloud, encompass with shadow, engage in personalities, execrate, expose, expose to infamy, fulminate against, gibbet, gloom, hang in effigy, heap dirt upon, ink, jaw, libel, load with reproaches, malign, mark, melanize, muckrake, murk, nigrify, obfuscate, obnubilate, obscure, obumbrate, occult, occultate, overcast, overcloud, overshadow, oversmoke, pillory, rag, rail at, rate, rave against, reprimand, revile, scorch, sear, shade, shadow, singe, slander, slubber, slur, smear, smirch, smoke, smouch, smudge, smut, smutch, soil, somber, soot, spot, stain, stigmatize, sully, taint, tarnish, throw mud at, thunder against, tongue-lash, traduce, vilify, vituperate, yell at, yelp at
ROGET THESAURUS
blacken
Detraction
VB
detract, derogate, decry, deprecate, depreciate, disparage, run down, cry down, backcap, belittle, sneer at, criticize, pull to pieces, pick a hole in one's coat, asperse, cast aspersions, blow upon, bespatter,
blacken, vilify, vilipend, avile, give a dog a bad name, brand, malign, muckrake, backbite, libel, lampoon, traduce, slander, defame, calumniate, bear false witness against, speak ill of behind one's back, fling dirt, anathematize, dip the pen in gall, view in a bad light, impugn (disparage the motives of), assail, attack, oppose, denounce, accuse.
Blackness
VB
be black, render black,
blacken, infuscate, denigrate, blot, blotch, smutch, smirch, darken, black, sable, swarthy, somber, dark, inky, ebony, ebon, atramentous, jetty, coal-black, jet-black, fuliginous, pitchy, sooty, swart, dusky, dingy, murky, Ethiopic, low-toned, low in tone, of the deepest dye, black as jet, black as my hat, black as a shoe, black as a tinker's pot, black as November, black as thunder, black as midnight, nocturnal, nigrescent, gray, obscure.