Synonyms of insincere

Adjective

1. insincere (vs. sincere), bootlicking, fawning, obsequious, sycophantic, toadyish, buttery, fulsome, oily, oleaginous, smarmy, soapy, unctuous, dissimulative, false, feigned, gilded, meretricious, specious, hypocritical, plausible, counterfeit#1, imitative, dishonest#1, dishonorable, disingenuous#1, artful, false, unreal

usage: lacking sincerity; "a charming but thoroughly insincere woman"; "their praise was extravagant and insincere"

Definition and meaning of insincere (Dictionary)