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