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