absent-minded
01
ぼんやりした, 上の空の
failing to remember or be attentive to one's surroundings or tasks due to being preoccupied with other thoughts
例
The absent-minded professor often forgot where he left his keys but was brilliant in his field.
上の空の教授はよく鍵をどこに置いたか忘れていたが、自分の分野では優秀だった。
