pert          
adjective uk/pɜːt/ us/pɝːt/
 小巧的;矫健的
attractively small and firm, as a description of a part of the body
  a pert bottom/nose 健美的臀部/小巧的鼻子 
  (尤指年轻女子的行为或特点)冒失但有趣的,俏皮的
used to describe behaviour or qualities, especially in a young woman, that are humorous because they do not show much respect
  a pert answer/glance/smile 俏皮的回答/一瞥/微笑