Capability rhymes with:
ability, acceptability, adaptability, admissibility, affordability, amiability, applicability, availability, combinability, compatibility, comprehensibility, debility, deductibility, electability, feasibility, flexibility, inaccessibility, invisibility, irresponsibility, irritability, legibility, malleability, overwhelmability, palatability, possibility, probability, rehability, reliability, responsibility, susceptibility, viability
Capability sounds like:
cabled, capaldi, capaldo, cappelletti, casebolt, caufield, chavalit, civiletti, civility, cobalt, cobbled, cockfield, coffelt, coffield, cofield, copilot, copulate, coupled, covalt, covault