Unpleasantly and excessively suave or ingratiating in manner or speech:
— Oleaginous hypocrisy.

synonyms: buttery, fulsome, oily, smarmy, soapy, unctuous.

Roget 355: unctuous, oily, oleaginous, adipose, sebaceous; unguinous^†; fat, fatty, greasy; waxy, butyraceous, soapy, saponaceous^†, pinguid, lardaceous^†; slippery.    ... show more

Containing an unusual amount of grease or oil:
— Oleaginous seeds.

synonyms: greasy, oily, sebaceous.

Polish: oleisty