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