やくそく【約束】 a promise;→英和 an engagement;→英和 an appointment.→英和 〜する (make a) promise;make an appointment.〜がある have an appointment;<米>have a date.→英和 〜を守る(破る) keep (break) one's promise[word].〜どおり as promised.〜の時間に at the appointed time.