Here's what rhymes with comparion.
                        
                        
                    
                                carrion  agrarian  ovarian  barbarian  clarion  librarian  sectarian  sanitarian  vulgarian  cnidarian  authoritarian  egalitarian  antiquarian  libertarian  vegetarian  communitarian  trinitarian  centenarian  seminarian  proletarian  veterinarian  octogenarian  nonsectarian  nonagenarian  humanitarian  utilitarian  totalitarian  parliamentarian  disciplinarian  latitudinarian  valetudinarian  sexagenarian  septuagenarian  Words that almost rhyme with comparion
barium  aquarium  chameleon  honorarium  nobelium  sanitarium  vivarium  planetarium  ferryman  ferrymen  lesbian  thespian  pedestrian  vestrymen  vestryman  equestrian