(adj) unpleasantly and excessivelysuave or ingratiating in manner or speech; "buttery praise"; "gave him a fulsome introduction"; "an oily sycophanticpress agent"; "oleaginous hypocrisy"; "smarmy self-importance"; "the unctuous Uriah Heep"; "soapy compliments"
resembling or containing or spread with butter; "a richbuttery cake"