Definition of "greasy" in English

adjective

1. Having a slippery surface; having a surface covered with grease.

   • a greasy mineral

2. Containing a lot of grease or fat.

   • c. 1795, Margaret Taylor, Mrs. Taylor’s Family Companion: or The Whole Art of Cookery Display’d, London: W. Lane, “To fry flat Fish,” p. 37, Before you dish them up, lay them upon a drainer before the fire sloping, for two or three minutes, which will prevent their eating greasy.

3. (slang) Shady, sketchy, dodgy, detestable, unethical.

4. (obsolete) Fat, bulky.

5. (obsolete) Gross; indelicate; indecent.

6. (of a horse) Afflicted with the disease called grease.

noun

1. (Australia, countable) An annoyed or contemptuous look; a dirty look.

2. (countable, uncountable) Wool that still contains grease and has not undergone scouring.