HYPOCRITE, n. One who, professing virtues that he does not respect, secures the advantage of seeming to be what he despises.
Ambrose Bierce (1842-1914?) American writer and journalist
“Hypocrite,” The Cynic’s Word Book (1906)
(Source)
Included in The Devil's Dictionary (1911). Originally published in the "Devil's Dictionary" column in the San Francisco Wasp (1885-08-22).