Inflected forms: af·fi·anced, af·fi·anc·ing, af·fi·anc·es To bind in a pledge of marriage; betroth.
ETYMOLOGY:
From Middle English affiaunce, assurance, from Old French, from affier, to trust to, from Medieval Latin affdre : Latin ad-, ad- + Latin fdus, faithful; see bheidh- in Appendix I.