Here's what rhymes with septegenarian.
carrion agrarian ovarian barbarian vegetarian veterinarian clarion centenarian seminarian septuagenarian libertarian vulgarian librarian egalitarian proletarian sectarian antiquarian disciplinarian trinitarian octogenarian latitudinarian sanitarian valetudinarian nonagenarian sexagenarian cnidarian authoritarian utilitarian totalitarian humanitarian communitarian parliamentarian nonsectarian Words that almost rhyme with septegenarian
chameleon barium aquarium honorarium vivarium nobelium sanitarium planetarium ferryman ferrymen lesbian pedestrian thespian vestrymen vestryman equestrian