言こと葉ば質じち

noun

promise; pledge

A formal or old-fashioned term for a spoken promise or pledge. Rare in modern conversation; more common equivalents are 約束 or 誓約.

• 彼かれは言こと葉ば質じちを守まもって、必かならず借しゃっ金きんを返かえした。

  He kept his word and repaid the debt without fail.