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