smarmy

adjectives

unpleasantly and excessively suave or ingratiating in manner or speech
"buttery praise"; "gave him a fulsome introduction"; "an oily sycophantic press agent"; "oleaginous hypocrisy"; "smarmy self-importance"; "the unctuous Uriah Heep"; "soapy compliments"
buttery, fulsome, oily, oleaginous, smarmy, soapy, unctuous
is derived from
smarm
is derived from
smarminess