/ hɪˈpɒkrəsi; NAmE hɪˈpɑːk-/ noun
( pl. -ies ) [ U , C ] ( disapproving ) behaviour in which sb pretends to have moral standards or opinions that they do not actually have :
He condemned the hypocrisy of those politicians who do one thing and say another.
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WORD ORIGIN
Middle English : from Old French ypocrisie , via ecclesiastical Latin , from Greek hupokrisis acting of a theatrical part, from hupokrinesthai play a part, pretend, from hupo under + krinein decide, judge.