expression, godan verb (-su)
wipe the slate clean; start anew; reset to a blank state
Idiomatic expression meaning to reset a situation, plan, or relationship back to its original, undecided state, as if returning to a blank sheet of paper.
交渉が決裂したので、計画を白紙に戻すことにした。
Since the negotiations broke down, we decided to go back to the drawing board with the plan.
過去のいざこざは白紙に戻して、新しい関係を築きましょう。
Let's wipe the slate clean of past troubles and build a new relationship.