Here's what rhymes with tripyramidal.
pyramidal extrapyramidal Words that almost rhyme with tripyramidal
blamable cannibal flammable inflammable nonflammable national radical rational casual diagonal verapamil practical irrational maximal clavicle factional lnternational octagonal cantonal madrigal international grammatical fractional interactional transnational hexagonal impractical supranational transactional unpractical multinational ungrammatical semiannual