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