頭あたまがいっぱい

expression

preoccupied with; obsessed with; only thinking of

Idiomatic expression meaning one's mind is completely filled with a particular thought or worry. Often used with ～で or ～のこと.

• 明日あしたの試し験けんのことで頭あたまがいっぱいだ。

  My mind is completely occupied with tomorrow's exam.

• 彼かの女じょは新あたらしいプロジェクトのアイデアで頭あたまがいっぱいだった。

  She was obsessed with ideas for the new project.