Part of Speech:

verb

Synonyms:

affect, camouflage, cloak, conceal, counterfeit, cover, cover up, dissimulate, double-talk, doublespeak, dress up, fake, falsify, feign, four-flush, hide, let on, make like, mask, pass, play possum, pussyfoot, put on a false front, put on a front, put on an act, put up a front, put up a smoke screen, sham*, shroud, shuck and jive, signify, simulate, stonewall, whitewash

Notes:

dissemble means to conceal, to give a false appearance; disassemble means to take apart

Antonyms:

admit, allow