Late 15th century. From re- + promise. Compare classical Latin reprōmissum formal promise, Middle French repromise promise.
repromise2
/ˌriːˈprɒmɪs/
verb
[with object]To promise again.
Origin
Late 15th century (in an earlier sense). From re- + promise. Compare classical Latin reprōmittere, Old French repromettre to promise in one's turn, Middle French, French repromettre to promise again, renew a promise.