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