scallywagscal‧ly‧wag /ˈskæliwæɡ/ especially British English (also scalawag American English) noun [countable] old-fashioned 
a child who causes trouble but not in a serious way – used when you are not angry with them SYN rascal
a child who causes trouble but not in a serious way – used when you are not angry with them SYN rascal