Here's what rhymes with placative.
native dative creative radiative iterative educative procreative nonnative cooperative innovative appreciative imitative oxidative deliberative dissipative regulative connotative denotative copulative cogitative emulative annotative legislative authoritative qualitative collaborative associative evaluative integrative vegetative meditative dissociative evaporative stimulative quantitative interpretative manipulative unappreciative investigative rehabilitative accumulative administrative nonadministrative Words that almost rhyme with placative
cages sages rages phages wadis wadges engages mutatis bellyaches reengages disengages greengages macrophages evasive plaintive invasive persuasive pervasive abrasive dissuasive unpersuasive noninvasive nonabrasive