timid
adjective uk/ˈtɪm.ɪd/ us/ˈtɪm.ɪd/
C2 羞怯的;胆小的，胆怯的
shy and nervous; without much confidence; easily frightened
Kieran is a timid child. 柯尔然是个非常羞怯的孩子。
My dog is a little timid - especially around other dogs. 我的狗有点儿胆小，尤其是在周围有其他狗的时候。