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