THESAURUS
Complicate
accelerate, add, adjoin, affix, agglutinate, aggravate, annex, append, attach, ball up, beef up, blow up, burden, concentrate, condense, confound, confuse, conjoin, consolidate, decorate, deepen, derange, disarrange, disorder, double, embrangle, encumber, enhance, entangle, exacerbate, exaggerate, foul up, garble, glue on, heat up, heighten, hitch on, hop up, hot up, implicate, infix, intensify, involve, jazz up, join with, jumble, key up, knot, louse up, magnify, make complex, make unintelligible, mess up, mix up, muck, muck up, muddle, mystify, obfuscate, obscure, ornament, paste on, perplex, plus, postfix, prefix, put with, ramify, ravel, redouble, reinforce, saddle with, scramble, screw up, shadow, sharpen, slap on, snafu, snarl, snarl up, soup up, step up, strengthen, subjoin, suffix, superadd, superpose, tack on, tag, tag on, tangle, triple, unite with, upset, whet
ROGET THESAURUS
Complicate
Complexity
VB
complexify, complicate.
Derangement
VB
derange, disarrange, misarrange, displace, misplace, mislay, discompose, disorder, deorganize, discombobulate, disorganize, embroil, unsettle, disturb, confuse, trouble, perturb, jumble, tumble, shuffle, randomize, huddle, muddle, toss, hustle, fumble, riot, bring into disorder, put into disorder, throw into disorder, muss, break the ranks, disconcert, convulse, break in upon, unhinge, dislocate, put out of joint, throw out of gear, turn topsy-turvy, bedevil, complicate, involve, perplex, confound, imbrangle, embrangle, tangle, entangle, ravel, tousle, towzle, dishevel, ruffle, rumple, litter, scatter, mix, rearrange.