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