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