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