insincere

adjective

1. lacking sincerity

- a charming but thoroughly insincere woman

- their praise was extravagant and insincere

Similar word(s): counterfeit, imitative, dishonest, dishonorable, artful, disingenuous, unreal, bootlicking, fawning, obsequious, sycophantic, toadyish, buttery, fulsome, oily, oleaginous, smarmy, soapy, unctuous, dissimulative, false, feigned, gilded, glossy, meretricious, specious, hypocritical, plausible, false