粘ねばり抜ぬく

godan verb (-ku), intransitive verb

stick it out; persevere to the end

Emphasizes tenaciously enduring a difficult situation or task until completion. Often used for long-term efforts.

• 彼かれは最さい後ごまで粘ねばり抜ぬいて、契けい約やくを勝かち取とった。

  He stuck it out to the end and won the contract.

• このプロジェクトは大たい変へんだが