Covered with or resembling an oily or fatty substance. The mechanic's hands were greasy after working on the car engine.
Containing or producing a lot of grease or oil. The greasy pizza left a stain on the napkin.
Slick or slippery due to the presence of grease. The floor was greasy, making it difficult to walk without slipping.
Having a smooth, oily texture or appearance. Her hair looked greasy because she hadn't washed it in days.
Unpleasantly ingratiating or sycophantic in manner. His greasy smile made everyone in the room uncomfortable.