borrowed from French, going back to Middle French, "one who loves, lover," borrowed from Latin amātor "lover, enthusiastic admirer, devotee," from amāre "to have affection for, love, be in love, make love to" (of uncertain origin) + -tōr-, -tor, agent suffix

Note: Latin amāre has been explained as an original stative verb with -ē- (hence, *ama-ē-, comparable to *sta-ē- > stāre "to stand"), formed from a root present *ama-, going back to an Indo-European verbal base *h₂m̥h₃- or *h₃m̥h₃- "take hold of, grasp" (whence also Sanskrit ámīti "takes hold of, swears," Greek ómnymi, omnýnai "to affirm with an oath," presumably originally "hold fast to an object while swearing"). Semantically the development in Latin is hypothetically "to grasp the hand of" > "to treat as a friend" > "to love." Supporting the presence of the verbal base in Italic would be the form amatens, allegedly, "(they) have seized" or "they have received" in a Sabellic text (the Aes Rapinum of the ancient Marrucini). According to an older theory amāre may be linked to a group of expressive/nursery words, as Latin amita "aunt," *amma "mother" (presumed from derivatives in personal names), Oscan ammai (dative singular) "mother." Another point of comparison with amāre has been Old Irish námae (genitive námat) "enemy," if it goes back to a participial formation *n(e)-h₂m̥h₃-(e)nt- "not loving" (compare Latin inimicus enemy), though the verbal base *h₂emh₃- is not otherwise attested in this or any other sense in Celtic. Concerning the derivative amīcus "friend" see note at amiable.