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