Dictionary / Vocabulary / 約束
やくそく
promise; agreement; arrangement; one's word
JLPT N4 common word
彼は約束を破った。
He broke his word.
約束するよ。
I give you my word.
娘はいつも、約束を守らない母親に苛立っていた。
The daughter was irritated with her mother, who always broke her promises.