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