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