scalawag

noun5

1. •
   A disreputable fellow, a good-for-nothing, a scapegrace, a blackguard.

   • Calvin: "I'm very very sorry that I took your precious flaaggg!" Hobbes: "Just don't do it any more, you scurvy scalawaaggg!" — 1990
2. •
   (Philippines) rogue police; rogue military personnel
3. •
   (informal) A badly behaved person, especially a child; a mischief-maker; a rascal.
4. •
   (disapproving, no longer used) Any white Southerner who supported the federal plan of Reconstruction after the American Civil War or who joined with the black freedmen and the carpetbaggers in support of Republican Party policies.

   • “And you, Hugh Elsing, I’m ashamed of you! What will your poor mother say? Drunk and out with a—a Yankee-loving Scallawag like Captain Butler![…]” — 1936
5. •
   (disapproving, no longer used) A scrawny cow.