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