dis·sim·u·late [ di símmyə làyt ](past and past participledis·sim·u·lat·ed, present participledis·sim·u·lat·ing, 3rd person present singulardis·sim·u·lates)
transitive and intransitive verb
Definition:
hide something by pretense: to disguise or hide true feelings, thoughts, or intentions
[15th century. < Latin dissimulat-, past participle of dissimulare "disguise completely" < simulare (see simulate)]