dissimulate

Origin

Inherited from Middle English dissimulaten, dissimilaten, from Latin dissimulātus + -en (“verb-forming suffix”), perfect passive participle of dissimulō (“to conceal, to pretend, to neglect”) (see -ate (verb-forming suffix)), from dissimilis (“unlike”) + -ō (verb-forming suffix). Compare the obsolete dissimule (“to conceal, disguise”), from Old French dissimuler (French dissimuler), ultimately from the same Latin root. Doublet of dissemble, dissimilate, and dissimule.