a.

1. 无礼貌的，冒失的，唐突的
2. 雅致的，时髦的，俏丽的
   She wore a pert little hat.

   她戴着一顶雅致的小帽子。

3. 【方】矫健的，活泼的
4. 【旧】伶俐的

adj.

1. (of a girl or young woman) attractively lively or cheeky.
   ▸impudent or cheeky:

   no need to be pert, miss.
2. (of a bodily feature or garment) attractively small and well shaped.