りこう〔履行〕 〈名〉Performance; fulfilment:(=する) to perform, fulfil, keep, make good (one's promise) ◆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 ◆彼は立派に約束を履行した　He was true to his word―as good as his word. ◆約束を履行しない　He broke his promise―He was false to his promise―He went back on his word. ◆契約を履行する　to keep to one's agreement―abide by one's agreement