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