Here's what rhymes with extensibility.
ability fertility agility hostility mobility utility nobility viability civility futility debility fragility docility senility servility virility scurrility possibility flexibility feasibility volatility ductility sociability versatility amiability invisibility responsibility probability availability capability irritability irresponsibility admissibility divisibility indivisibility legibility malleability negotiability reliability applicability susceptibility tranquillity acceptability adaptability inaccessibility inviolability reversibility affordability incapability compatibility improbability comprehensibility inscrutability practicability communicability imperturbability incomprehensibility incorruptibility impracticability Words that almost rhyme with extensibility
trilogy billowy dignity rigidity bigotry busily felicity epitome rickety trinity epiphany festivity villainy bigamy frigidity timothy dizzily willowy activity initially simplicity validity vicinity affinity divinity symmetry tyranny cheerfully infinity morbidity rapidity acidity minutely salinity simile solidity timidity distally fixity fluidity indignity litany nativity prettily sublimity timidly turbidity wilfully cheerily willfully dismally guiltily tearfully wittily finicky privily efficiency sympathy differently ministry antiquity efficiently implicitly officially publicity specificity toxicity captivity humidity visibly visually vividly antipathy asymmetry brilliancy brilliantly chivalry liquidity plasticity selectivity skillfully symphony domesticity fearfully fearlessly insensitivity negativity periodicity polygamy soliloquy blissfully declivity distantly fitfully invalidity judicially ritually signally viciously placidity polyphony aborigine sufficiently deficiency electricity explicitly creativity elasticity proximity sufficiency complicity eccentricity facsimile femininity indifferently indignantly relativity religiously insufficiently suspiciously wistfully beneficially deliciously exigency hospitably invisibly listlessly proclivity resiliency catholicity flippancy prolixity quizzically productivity conductivity conspiracy artificially inherently insufficiency masculinity proficiency inefficiency intermittently persistently superficially unanimity alkalinity assiduously magnanimity predictably surreptitiously calligraphy exclusivity expeditiously insistently stringency unofficially inefficiently stringently contingency delinquency malignancy radioactivity irresistibly inexplicably coherency contingently minstrelsy pusillanimity unpredictably consistently consistency inconsistency superconductivity incoherently inconsistently immunodeficiency