promise

verb [vt. 及物动词]承诺，保证；使很可能，预示；指望，期待（promoise oneself）；<古>把（某人，尤指女人）许配给；有指望，有前途

If you promise someone something, you tell them that you will definitely give it to them or make sure that they have it. ^{向 (某人) 承诺 (给予他们某物); 向 (某人) 保证 (他们获得某物)}