scallywag
noun
[ ˈskalɪwaɡ ]
• a person, typically a child, who behaves badly but in an amusingly mischievous rather than harmful way; a rascal.
• "that scallywag of a son of yours"
• a white Southerner who collaborated with northern Republicans during the post-Civil War reconstruction period.
Origin:
mid 19th century: of unknown origin.