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