* c.1300, "love," from Old French amour , from Latin amorem (nominative amor ) "love, affection, strong friendly feeling" (it could be used of sons or brothers, but especially of sexual love), from amare "to love" (see Amy). The accent shifted 15c.-17c. to the first syllable as the word became nativized, then shifted back as the naughty or intriguing sense became primary and the word was felt to be a euphemism.
A common ME word for love, later accented ámour (cf. enamour ). Now with suggestion of intrigue and treated as a F[rench] word. [Weekley]