言げんを守まもる

expression, godan verb (-ru)

keep one's word; keep a promise

Used when someone honors what they said they would do; often implies reliability and trustworthiness.

• 彼かれはいつも言げんを守まもる人ひとだ。

  He is a person who always keeps his word.

• 約やく束そくした以い上じょう、言げんを守まもらなければならない。

  Since you promised, you must keep your word.