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