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