Here's what rhymes with extensivity.
nativity activity declivity festivity acclivity captivity relativity selectivity insensitivity negativity exclusivity proclivity conductivity creativity productivity radioactivity superconductivity Words that almost rhyme with extensivity
specificity toxicity felicity publicity plasticity domesticity infelicity rusticity simplicity elasticity complicity periodicity catholicity electricity eccentricity 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 explicitly consistency implicitly masculinity proficiency sufficiency acceptability brilliancy brilliantly indifferently indignantly inefficiency intermittently irritability malignancy persistently religiously alkalinity insufficiently irresistibly irresponsibility magnanimity admissibility blissfully calligraphy hospitably invisibility judicially listlessly resiliency stringency divisibility incoherently inefficiently malleability polyphony quizzically stringently ambitiously auspiciously incapability reliability applicability artificially contingency inconsistency insufficiency susceptibility adaptability compatibility superficially predictably suspiciously deliciously inaccessibility inexplicably inviolability reversibility affordability contingently inconsistently indivisibility minstrelsy pusillanimity delinquency surreptitiously expeditiously improbability practicability unpredictably immunodeficiency impracticability