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