Scabby

Adjective

1. Affected with scabs; full of scabs.
2. Diseased with the scab (mange): mangy.
3. Having a blotched, uneven appearance.
4. Injured by the attachment of barnacles to the carapace of a shell.
5. Working against union policies, working to bust unions; in particular, being a scab (worker who crosses a union picket line).