心こころここにあらず

expression

distracted; absent-minded; physically present but mentally elsewhere

Describes a state where one's body is present but the mind is wandering; often used when someone is not paying attention or is preoccupied.

• 授じゅ業ぎょう中ちゅう、彼かれは心こころここにあらずで、窓まどの外そとを見みていた。

  During class, he was distracted and staring out the window.

• 会かい議ぎで心こころここにあらずの様よう子すだった。

  He seemed absent-minded at the meeting.