From Longman Dictionary of Contemporary Englishdissembledis‧sem‧ble /dɪˈsembəl/ verb [intransitive, transitive] literary HIDE/NOT SHOWto hide your true feelings, thoughts etc→ See Verb table
Examples from the Corpus
dissemble• Knowing him very well, I know that he would not rise just to dissemble.• My friend proved that the cabbie was dissembling, and we trooped back to the terminal to look for Mr Right.• She had, as far as he knew, no reason to be curious, and therefore no reason to dissemble her curiosity.• He sometimes has to dissemble in order to prevail on crucial issues.• In assessing a recent downturn, they refuse to resort to the dissembling language of corporate reports and quarterly statements.Origin dissemble (1400-1500) dissimule “to hide your feelings” ((14-17 centuries)), from Latin dissimulare; → DISSIMULATE 