許ゆるすまじ

expression

unforgivable; inexcusable; unpardonable

A fixed, somewhat old-fashioned or emphatic expression meaning 'should not be forgiven' or 'unforgivable'. Often used in dramatic or literary contexts.

• 彼かれの裏うら切ぎりは許ゆるすまじ行こう為いだ。

  His betrayal is an unforgivable act.

• このような不ふ正せいは許ゆるすまじ。

  Such injustice is inexcusable.