白はく紙しに返かえす

expression, godan verb (-su)

wipe the slate clean; start anew; reset to a blank state

Used when a situation, plan, or relationship is reset to its original, unmarked state, as if returning to a blank sheet of paper. Often implies discarding past problems or progress.

See also: 白紙に戻す

• 過か去この失しっ敗ぱいを白はく紙しに返かえして、新あたらしい計けい画かくを立たてよう。

  Let's wipe the slate clean of past failures and make a new plan.

• 交こう渉しょうは難なん航こうしたが、いったん白はく紙しに返かえして再さいスタートすることになった。

  The negotiations were difficult, but we decided to reset them to a blank state and start over.