Convertibility rhymes with:
collectibility, incompatibility, indestructibility, collectibility, fallibility, impossibility, incompatibility, indestructibility, infallibility, inflexibility, miscibility, plausibility, sensibility
collectibility, incompatibility, indestructibility, collectibility, fallibility, impossibility, incompatibility, indestructibility, infallibility, inflexibility, miscibility, plausibility, sensibility