Here's what rhymes with umptive.
assumptive presumptive consumptive Words that almost rhyme with umptive
irruptive eruptive inductive disruptive seductive ablative locative vocative lenitive productive impulsive repulsive conductive fricative appositive mutative combustive destructive instructive compulsive obstructive transitive convulsive subjunctive disjunctive propulsive constructive reproductive unproductive proliferative nonproductive reconstructive nondestructive superconductive counterproductive nonconstructive