Here's what rhymes with investigatable.
equatable Words that almost rhyme with investigatable
laudable watchable probable inaudible unstoppable improbable possible cortical horrible portable constable nautical adorable washable coracle adoptable lockable karakul particle soluble cardinal nominal plausible affordable carnival conjugal follicle forcible carbonyl chargeable corpuscle voluble solvable supportable exhaustible fontanel fordable monocle purchasable chlorophyl impossible abdominal marginal canonical doctrinal phenomenal topical allegorical deplorable apocryphal torsional farcical barnacle exportable unsolvable tortoiseshell importable remarkable proportional proximal anatomical insoluble inexhaustible methodical orthogonal enforceable implausible oratorical aeronautical insupportable pronominal tetragonal resolvable transportable rechargeable insolvable revolvable enlargeable responsible hierarchical irresponsible cytological unenforceable unremarkable oligarchical scatological submarginal antiparticle disproportional seismological rhapsodical nonenforceable gemological nonchargeable anthropological etymological entomological phantasmagorical gemmological epistemological cosmological gerontological