Here's what rhymes with aphthartodocetism.
                        
                        
                    
                                prism  schism  egoism  egotism  hedonism  holism  chrism  sophism  socialism  despotism  heroism  terrorism  dualism  pessimism  fatalism  pacifism  aphorism  chauvinism  elitism  fetishism  heathenism  pauperism  automatism  synergism  futurism  purism  tokenism  tropism  organism  patriotism  feminism  journalism  optimism  pluralism  symbolism  activism  altruism  barbarism  cynicism  dynamism  embolism  federalism  feudalism  modernism  positivism  rheumatism  scepticism  absolutism  catechism  dogmatism  eroticism  nihilism  paganism  separatism  anarchism  animism  antisemitism  euphemism  exorcism  favoritism  hypnotism  legalism  mannerism  nepotism  ostracism  parasitism  plagiarism  populism  shamanism  stoicism  albinism  archaism  botulism  cretinism  favouritism  isomerism  mesmerism  parochialism  racialism  solipsism  witticism  solecism  specialism  criticism  mechanism  capitalism  alcoholism  liberalism  mysticism  skepticism  determinism  fanaticism  formalism  humanism  magnetism  naturalism  pragmatism  radicalism  classicism  evangelism  militarism  narcissism  paternalism  postmodernism  regionalism  aneurism  behaviorism  centralism  corporatism  lyricism  recidivism  voluntarism  abolitionism  exoticism  neutralism  proselytism  puritanism  adventurism  anabolism  bimetallism  galvanism  invalidism  monetarism  metabolism  communism  imperialism  nationalism  antagonism  colonialism  conservatism  materialism  empiricism  parallelism  rationalism  relativism  romanticism  unionism  cannibalism  consumerism  hyperthyroidism  hypothyroidism  protectionism  republicanism  secularism  astigmatism  commercialism  emotionalism  provincialism  revisionism  gradualism  impressionism  negativism  perfectionism  revivalism  syndicalism  individualism  anachronism  authoritarianism  collectivism  industrialism  agnosticism  eclecticism  expansionism  factionalism  functionalism  isolationism  mercantilism  monasticism  scholasticism  sectarianism  traditionalism  ecumenism  exhibitionism  expressionism  interventionism  sectionalism  somnambulism  professionalism  bilingualism  fundamentalism  totalitarianism  utilitarianism  cosmopolitanism  egalitarianism  anticommunism  clericalism  evangelicalism  internationalism  constitutionalism  existentialism  humanitarianism  intellectualism  microorganism  sensationalism  sentimentalism  electromagnetism  transcendentalism  environmentalism  Words that almost rhyme with aphthartodocetism
prison  rhythm  arisen  risen  mizzen  given  addition  vision  driven  edition  listen  mission  derision  fission  sedition  audition  riven  stiffen  position  decision  division  permission  physician  admission  ambition  petition  suspicion  emission  revision  submission  forgiven  omission  remission  tuition  apparition  attrition  fruition  magician  volition  imprison  striven  logician  theoretician  glisten  condition  definition  opposition  tradition  commission  provision  algorithm  precision  supervision  abolition  collision  exhibition  incision  inhibition  intuition  nutrition  partition  politician  prohibition  excision  ignition  supposition  erudition  technician  apposition  dentition  envision  logarithm  patrician  rendition  rhetorician  statistician  dietitian  ebullition  prevision  readmission  rescission  tactician  television  transition  disposition  expedition  repetition  coalition  cognition  deposition  superstition  clinician  imposition  musician  subdivision  admonition  demolition  contrition  indecision  intermission  paroxysm  cataclysm  disquisition  obstetrician  pediatrician  munition  competition  composition  transmission  acquisition  proposition  ammunition  exposition  circumcision  mathematician  preposition  extradition  precondition  presupposition  redefinition  superposition  electrician  manumission  premonition  academician  imprecision  recognition  decomposition  juxtaposition  malnutrition  predisposition  requisition  transposition  indisposition  inquisition  interposition  diagnostician  superimposition  wisdom  serum  theorem  dictum  gypsum  cecum  gingham  system  kingdom  victim  pilgrim  fearsome  winsome  symptom  ecosystem