Archhypocrisy

The most extreme or flagrant form of hypocrisy; pretending to have virtues or beliefs that one does not actually possess to an extraordinary degree.

From arch- (supreme, extreme) + hypocrisy (the practice of claiming to have virtues one does not possess). Hypocrisy comes from Old French hypocrisie, from Late Latin hypocrisis, from Greek hypokrisis (acting, feigning).