Here's what rhymes with rebellium.
nobelium Words that almost rhyme with rebellium
barium carrion chameleon librarian ovarian sectarian aquarium libertarian clarion honorarium sanitarium vivarium agrarian barbarian trinitarian planetarium sanitarian cnidarian authoritarian utilitarian egalitarian proletarian totalitarian vegetarian vulgarian antiquarian veterinarian nonsectarian centenarian seminarian humanitarian communitarian disciplinarian octogenarian nonagenarian parliamentarian latitudinarian septuagenarian valetudinarian sexagenarian gentium biennium lutetium requiem fermium millennium proscenium technetium lawrencium compendium quadrennium endometrium