Here's what rhymes with sustantive.
Words that almost rhyme with sustantive
punches lunches plunges hunches lunges brunches munches crunches lumpish expunges frumpish scrunches keypunches muskellunges seductive irruptive inductive ablative eruptive vocative destructive productive instructive disruptive impulsive obstructive repulsive conductive subjunctive disjunctive locative fricative appositive assumptive mutative combustive lenitive constructive compulsive transitive presumptive propulsive reproductive unproductive convulsive consumptive superconductive proliferative reconstructive nondestructive nonproductive nonconstructive counterproductive