1630s, "disposed to love or sexual passion," from Latin amat-, past-participle stem of amare "to love" (see Amy) + -ive. Related: Amativeness.
Entries linking to amative
Amy
fem. proper name, from Old French Amee, literally "beloved," from fem. past participle of amer "to love," from Latin amare "to love, be in love with; find pleasure in," Proto-Italic *ama- "to take, hold," from a PIE root meaning "take hold of," also the source of Sanskrit amisi, amanti "take hold of; swear;" Avestan *ama- "attacking power;" Greek omnymi "to swear," anomotos "under oath;" Old Irish namae "enemy." According to de Vaan, "The Latin meaning has developed from 'to take the hand of' [to] 'regard as a friend'."
-ive
word-forming element making adjectives from verbs, meaning "pertaining to, tending to; doing, serving to do," in some cases from Old French -if, but usually directly from Latin adjectival suffix -ivus (source also of Italian and Spanish -ivo). In some words borrowed from French at an early date it has been reduced to -y (as in hasty, tardy).