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