才さい走ばしる

godan verb (-ru), intransitive verb

be clever; be quick-witted; be precocious

Describes a person, especially a child, who shows intelligence or wit beyond their years. Often carries a slightly negative nuance of being too clever or showing off.

• あの子こは才さい走ばしっていて、大人おとなの会かい話わにもついていく。

  That child is precocious and can follow adult conversations.

• 才さい走ばしった発はつ言げんがかえって反はん感かんを買かった。

  His clever remark ended up provoking resentment.