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