The Collaborative International Dictionary of English v.0.48:
Dissimulate \Dis*sim"u*late\, a. [L. dissimulatus, p. p. of dissimulare. See Dissemble.] Feigning; simulating; pretending. [Obs.] --Henryson. [1913 Webster]The Collaborative International Dictionary of English v.0.48:
dissimulate \dis*sim"u*late\, v. i. To dissemble; to feign; to pretend. [1913 Webster]WordNet (r) 3.0 (2006):
dissimulate v 1: hide (feelings) from other people