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