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