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