prom·ise

/ˈpräməs/

Noun A declaration or assurance that one will do a particular thing or that guarantees that a particular thing will happen.

Verb Assure someone that one will definitely do, give, or arrange something; undertake or declare that something will happen.

Synonyms noun. pledge – undertaking – vow – word – engagement – hope verb. pledge – vow – give one’s word – make a promise