引いん決けつ

noun, noun or participle which takes 'suru', intransitive verb

taking responsibility and committing suicide

Dated term for a formal, often ritualized suicide undertaken to accept blame or resolve a serious matter. Not used in modern everyday contexts.

• 昔むかしの武ぶ士しは、不ふ始し末まつの責せき任にんを取とって引いん決けつすることがあった。

  In the past, samurai would sometimes take responsibility for a failure by committing ritual suicide.