oily
oi-ly
adjective
Covered with, containing, or resembling oil; greasy to the touch.
"His hands were oily from the engine."
adjective
Unpleasantly smooth, flattering, or ingratiating in manner or speech.
"He gave an oily, insincere smile."
Thesaurus
Synonyms: coated, greasy, fatty, sebaceous, fat, oleaginous, dirty, unclean, soiled, buttery, fulsome, smarmy