Here's what rhymes with availability.
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trilogy rapidity billowy activity dignity affinity rigidity acidity bigotry busily nativity rickety trinity turbidity villainy bigamy timothy dizzily rusticity willowy validity vicinity antiquity divinity elasticity officially publicity symmetry tyranny captivity cheerfully antipathy minutely relativity salinity simile solidity timidity distally epitome fixity litany prettily sublimity timidly wilfully cheerily epiphany willfully dismally frigidity guiltily tearfully wittily abysmally finicky privily sympathy differently initially ministry creativity proximity toxicity humidity infinity morbidity visibly visually vividly asymmetry brilliancy brilliantly chivalry complicity felicity femininity liquidity plasticity selectivity skillfully symphony unanimity alkalinity fearfully fearlessly fluidity indignity negativity polygamy soliloquy blissfully declivity distantly festivity fitfully judicially ritually signally viciously placidity polyphony efficiency sufficiently deficiency electricity productivity simplicity efficiently implicitly specificity artificially masculinity proficiency sufficiency facsimile religiously assiduously periodicity suspiciously wistfully calligraphy deliciously listlessly proclivity resiliency unofficially catholicity flippancy prolixity quizzically explicitly conductivity conspiracy contingency eccentricity indifferently indignantly malignancy persistently radioactivity superficially domesticity insensitivity magnanimity predictably surreptitiously beneficially exclusivity exigency hospitably invalidity invisibly stringency contingently stringently consistently consistency delinquency inherently insufficiency inefficiency intermittently insufficiently irresistibly expeditiously insistently coherency inefficiently minstrelsy pusillanimity unpredictably inconsistency inexplicably superconductivity incoherently inconsistently immunodeficiency