Here's what rhymes with systemative.
combative Words that almost rhyme with systemative
magis satis attaches badges snatches hatches radish flattish faddish snappish tabus kaddish caddish chapattis menages thatches hadjis laddish cadges detaches nuthatches despatches dispatches mismatches reattaches crosshatches kaffeeklatsches crosspatches massive passive adaptive captive inactive attractive reactive interactive impassive proactive hyperactive nonactive refractive unattractive contrastive extractive vasoactive overactive psychoactive nonreactive radioactive maladaptive retroactive counteractive expansive immunoreactive putrefactive nonradioactive