Having a slippery surface; having a surface covered with grease. / Containing a lot of grease or fat. / (slang) shady, sketchy, dodgy, detestable, unethical. / (obsolete) fat, bulky

The state of being greasy.

plural of greasiness

(idiomatic, informal) An inexpensive diner or other informal restaurant, especially one specializing in frying or grilling.

plural of greasy spoon

A sporting event that involves staying on, climbing up, walking over or otherwise traversing a pole that has been made slippery. / The slippery pole used in the event.

(informal, derogatory) Greasy hair oil. / (informal, derogatory) Something puerile or not worth bothering with.