tartuffe

noun, plural Tar·tuffes [tahr-too fs, –toofs; French tar–tyf] /tɑrˈtʊfs, -ˈtufs; French tarˈtüf/ for 2.

1. (italics) a comedy (1664–69) by Molière.
2. Also Tar·tufe. (often lowercase) a hypocritical pretender to piety.

noun

1. a person who hypocritically pretends to be deeply pious

“pretender to piety,” 1670s, from name of principal character in comedy by Molière (1664), apparently from Old French tartuffe “truffle,” chosen for suggestion of concealment (Tartuffe is a religious hypocrite).