scabby

adjective6

1. •
   Affected with scabs; full of scabs.

   • Her wrizled skin, as rough as maple rind, So scabby was, that would have loath'd all womankind. — 1590
2. •
   Diseased with the scab (mange): mangy.
3. •
   (UK, slang) stingy; scrounging.

   • The chipper was a bit scabby on the vinegar today.
   • I lent you a fiver last week and you still haven’t paid me back, you scabby bastard!
4. •
   Having a blotched, uneven appearance.
5. •
   Working against union policies, working to bust unions; in particular, being a scab (worker who crosses a union picket line).

   • [They're a] scabby right-to-work company and they don't care how much the sharp edges on that dust screw up a guy's lungs. — 2016
6. •
   Injured by the attachment of barnacles to the carapace of a shell.