greasy

Short definition from Wiktionary

Adjective

1. 1
   Having a slippery surface; having a surface covered with grease.
2. 2
   Containing a lot of grease or fat.
3. 3
   Shady, sketchy, dodgy, detestable, unethical.
4. 4
   Fat, bulky.
5. 5
   Gross; indelicate; indecent.
6. 6
   Afflicted with the disease called grease.

Noun

1. 1
   An annoyed or contemptuous look; a dirty look.