sanctimonious

canting, goody-goody, holier-than-thou, moralistic, pharisaical, pious, rectitudinous, self-righteous, simon-pure

artificial, backhanded, counterfeit, double, double-dealing, double-faced, fake, feigned, hypocritical, insincere, Janus-faced, jive [slang], left-handed, lip, mealy, mealymouthed, Pecksniffian, phony (also phoney), phony-baloney (or phoney-baloney), pretended, two-faced, unctuous

affected, assumed, claptrap, contrived, forced, mechanical, put-on, simulated, strained, unnatural

empty, hollow, meaningless

deceitful, devious, dishonest, false, untruthful

facile, glib, superficial

bogus, sham

campy, facetious, jocular, tongue-in-cheek