遅おそかりし由ゆ良ら之の助すけ

expression

miss a chance; let an opportunity slip away

Rare idiomatic expression originating from the kabuki play 'Kanadehon Chūshingura', referring to the character Yuranosuke who arrives too late to help. Used to describe a situation where one fails to act in time and loses an opportunity.

• 「遅おそかりし由ゆ良ら之の助すけ」とは、絶ぜっ好こうの機き会かいを逃のがしてしまったことを嘆なげく言こと葉ばだ。

  'Osokarishi Yuranosuke' is a phrase lamenting having missed a golden opportunity.