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