1. A lover, of either sex; a wooer or a mistress (formerly in a good sense, now only in a bad one); one who takes the place, without possessing the rights, of a husband or wife; used of a man or a woman. The seducer appeared with dauntless front, accompanied by his paramour (Macaulay)
Origin: F. Par amour, lit, by or with love. See Par, and Amour.