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