Meaning

originFrom Middle English affien (“to have faith, trust”), from Anglo-Norman afier, affier, affyer, Middle French afier, affier, affyer, and Old French afier (“to agree to marry; to believe, trust; to assure, promise; to confide in; to pledge, swear”), from Late Latin affidare (“to betroth; to pledge faith”), from Latin af- (a variant of ad- (intensifying prefix)) + Vulgar Latin *fīdāre (“to trust”)…

Etymology from Wiktionary, CC BY-SA 3.0