var·mint
noun/ˈvɑːmɪnt/
/ˈvɑːrmɪnt/
(especially North American English, old-fashioned, informal)- a wild animal that causes problems
害兽 - a person, especially a child, who causes trouble
惹是生非的人；（尤指）顽童，小淘气
Word Originmid 16th cent.: alteration of vermin.