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