Credulity rhymes with:
ability, abnormality, acceptability, actuality, adaptability, admissibility, affordability, agility, amiability, applicability, availability, bisexuality, brutality, capability, civility, combinability, commonality, compatibility, comprehensibility, confidentiality, congeniality, criticality, debility, deductibility, dimensionality, docility, duality, ductility, electability, equality, extraterritoriality, fatality, feasibility, fertility, fidelity, finality, flexibility, formality, fragility, frivolity, frugality, futility, generality, geniality, homosexuality, hospitality, hostility, impersonality, inaccessibility, inequality, invisibility, irrationality, irresponsibility, irritability, legality, legibility, lethality, liberality, locality, malleability, mentality, mobility, modality, morality, mortality, municipality, musicality, nationality, neutrality, nobility, normality, overwhelmability, palatability, partiality, polity, possibility, practicality, probability, quality, reality, rehability, reliability, responsibility, senility, sensuality, sexuality, spirituality, susceptibility, theatricality, tonality, totality, triviality, universality, unreality, utility, versatility, viability, virility, vitality, volatility