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