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