決けっ死し行こう

noun

suicidal action; death-defying act; action taken with readiness to die

Refers to an act undertaken with full acceptance that it may lead to one's death; often used in dramatic or historical contexts.

• 彼かれは決けっ死し行こうを覚かく悟ごで敵てき陣じんに突とつ入にゅうした。

  He charged into the enemy camp, prepared for a suicidal action.

• その任にん務むはまさに決けっ死し行こうだった。

  That mission was truly a death-defying act.