- Archaic trust or faith
- a plighting of faith; promise of marriage; betrothal
Origin of affianceMiddle English affiaunce ; from Old French afiance ; from afier, to trust in ; from Medieval Latin affidare ; from ad-, to + fidare, to trust ; from Classical Latin fidere: see fidelity
transitive verbaf·fi·anced, af·fi·anc·ing, af·fi·anc·es
Origin of affianceFrom Middle English affiaunce, assurance, from Old French, from affier, to trust to, from Medieval Latin affīdāre : Latin ad-, ad- + Latin fīdus, faithful; see bheidh- in Indo-European roots.
(third-person singular simple present affiances, present participle affiancing, simple past and past participle affianced)
From Middle French afiance < afier (< Medieval Latin affīdāre < *fīdāre < Latin fīdere) + -ance.