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