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