1. 伪善者：dissimulation 掩饰 | dissimulator 伪善者 | dissipate 驱散
2. 假装不知者：dissimulatedissimulation 装糊涂 | dissimulator 假装不知者 | dissimulator 假装不知者
3. 伪善者,伪君子：simulator 模仿者 | dissimulator 伪善者,伪君子 | stimulator 激励者
4. 假装不知者/伪善者：dissimulation /掩饰/装糊涂/虚伪/ | dissimulator /假装不知者/伪善者/ | dissipate /散失/驱散/浪费/消散/放荡/
noun
1. a person who professes beliefs and opinions that he or she does not hold in order to conceal his or her real feelings or motives