頭あたまが切きれる

expression, ichidan verb

sharp; keen; clever; on the ball

Describes a person who is mentally sharp, quick-witted, or highly intelligent. Often used to praise someone's quick thinking or problem-solving ability.

• 彼かれは本ほん当とうに頭あたまが切きれるから、難むずかしい問もん題だいもすぐに解かい決けつする。

  He is really sharp, so he solves even difficult problems right away.

• あの新しん人じんは頭あたまが切きれるね。入にゅう社しゃしてすぐに仕し事ごとを覚おぼえた。

  That new employee is on the ball. He picked up the job right after joining.