Definition of Oily

Adjective: oily (oilier,oiliest) oy-lee

Containing an unusual amount of grease or oil
"oily fried potatoes";
- greasy, sebaceous, oleaginous
Unpleasantly and excessively suave or ingratiating in manner or speech
"an oily sycophantic press agent";
- buttery, fulsome, oleaginous, smarmy, soapy, unctuous
Coated or covered with oil
"oily puddles in the streets"
Smeared or soiled with grease or oil
"get rid of rubbish and oily rags";
- greasy