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