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