amiable (adj.)

late 14c., "kindly, friendly," also "worthy of love or admiration," from Old French amiable "pleasant, kind; worthy to be loved" (12c.), from Late Latin amicabilis "friendly," from Latin amicus "friend, loved one," noun use of an adjective, "friendly, loving," from amare "to love" (see Amy).

The form and sense were confused in Old French with amable "lovable" (from Latin amare "to love"), and by 16c. the English word also had a secondary sense of "exciting love or delight," especially by having an agreeable temper and a kind heart. The word was subsequently reborrowed by English in Latin form without the sense contamination as amicable.