Here's what rhymes with undammable.
blamable flammable inflammable nonflammable Words that almost rhyme with undammable
pyramidal cannibal extrapyramidal passable chasuble compatible tangible palpable taxable impassable fallible laughable impassible bankable satiable savable national radical rational valuable casual diagonal adaptable implacable infallible intangible mandible octagonal tractable detachable impalpable merchantable nontaxable cantabile unflappable fanciable practical incompatible invaluable irrational maximal intractable clavicle factional verapamil cantonal madrigal unpractical graspable frangible attractable declarable nondetachable international grammatical understandable fractional impractical interactional lnternational collapsible expandable retractable multinational transnational hexagonal transactional ungrammatical semiannual supranational