万ばん全ぜんの策さく

noun

foolproof plan; infallible measure

A plan or measure that is perfectly safe and leaves no room for failure. Often used in formal or strategic contexts.

• 彼かれは万ばん全ぜんの策さくを講こうじてプロジェクトに臨のぞんだ。

  He approached the project with a foolproof plan.

• 災さい害がいに備そなえて万ばん全ぜんの策さくを取とる必ひつ要ようがある。

  We need to take infallible measures to prepare for disasters.