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