scallywag
noun (British English)(North American English usually scalawag)
(informal)a person, especially a child, who behaves badly, but not in a serious way 调皮捣蛋的人，淘气鬼（尤指儿童） You little scallywag! 你这个小流氓！ How’s that scallywag of a son of yours? 你那个混蛋儿子怎么样了？
Word Originmid 19th cent.: of unknown origin.