"smarmy" in the adjective sense
1. buttery, fulsome, oily, oleaginous, smarmy, soapy, unctuous
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"
Source: WordNet® (An amazing lexical database of English)
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