約束を履行する
to fulfil one's promise―keep one's promise―keep one's word―make good one's promise―redeem one's pledge
約束を履行する.
約束すること
から約束
to make a solemn promise with someone
約束をふむ
the act of exchanging promises
to keep one's promise―keep one's word―be true to one's word―be as good as one's word―keep an appointment―keep to an agreement―abide by an agreement
a promise
keep a promise [one's word]