THESAURUS
obfuscate
adumbrate, becloud, bedarken, bedim, befog, begloom, black, black out, blacken, blanket, blind, block the light, blot out, blur, brown, camouflage, cast a shadow, cloak, cloud, cloud over, complicate, conceal, confuse, corrupt, cover, cover up, curtain, darken, darken over, deform, dim, dim out, disguise, disorder, dissemble, distort, distract attention from, eclipse, encloud, encompass with shadow, ensconce, enshroud, envelop, fog up, garble, gloom, gloss over, hide, jumble, keep under cover, make unintelligible, mask, mess up, misadvise, misdirect, miseducate, misguide, misinform, misinstruct, mislead, misteach, muddle, murk, mystify, obnubilate, obscure, obumbrate, occult, occultate, overcast, overcloud, overshadow, pervert, scramble, screen, shade, shadow, shroud, slur over, somber, unform, unshape, varnish, veil, whitewash
ROGET THESAURUS
obfuscate
Darkness
VB
be dark, darken, obscure, shade, dim, tone down, lower, overcast, overshadow, eclipse,
obfuscate, offuscate, obumbrate, adumbrate, cast into the shade becloud, bedim, bedarken, cast a shade, throw a shade, spread a shade, cast a shadow, cast a gloom, throw a shadow, spread a shadow, cast gloom, throw gloom, spread gloom, extinguish, put out, blow out, snuff out, doubt, turn out the lights, douse the lights, dim the lights, turn off the lights, switch off the lights.
Opacity
VB
be opaque, obstruct the passage of light,
obfuscate, offuscate.