The quality or state of being greasy, having an oily or slippery texture. The greasiness of the pizza made it difficult to hold without a napkin.
The presence of excessive oil or fat, often in food or on surfaces. The mechanic's hands were covered in greasiness after working on the car engine.
A condition of having an oily appearance, often used to describe skin or hair. She was concerned about the greasiness of her hair after not washing it for several days.