相あい済すまぬ

expression

very sorry; remorseful; apologetic

Archaic expression of deep apology or regret, equivalent to modern 相済まない. Used in historical or formal literary contexts.

See also: 相済む (あいすむ) · 相済まない (あいすまない)

• 「相あい済すまぬ」と、武ぶ士しは深ふかく頭あたまを下さげた。

  "I am deeply sorry," said the samurai, bowing his head.