noun
blank slate; tabula rasa
Used for a situation, mind, or plan that is completely fresh, without any preconceptions or prior content. Often appears in phrases like 白紙状態に戻す (return to a blank slate).
交渉は白紙状態に戻った。
The negotiations went back to square one.
新しいプロジェクトはまだ白紙状態だ。
The new project is still a blank slate.