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