約束 やくそく まも
yakusokuo mamoru

Godan Verb (ru)
Expression

1. to keep a promise; to keep one's word

Related to 約束を破る
ひと自分 じぶん約束 やくそく まもらなければならない。
hitowa jibunno yakusokuo mamoranakereba naranai.
One should keep one's promise.
Other forms: