Here's what rhymes with ositum.
                        
                        
                    
                                Words that almost rhyme with ositum
written  hidden  bitten  kitten  smitten  mitten  kitchen  ribbon  ridden  pigeon  unwritten  gibbon  rewritten  unbidden  overwritten  religion  overridden  underwritten  system  serum  victim  theorem  cecum  rhythm  symptom  dictum  schism  fearsome  gingham  besom  lyceum  sophism  kingdom  wisdom  prism  gypsum  aphorism  holism  winsome  chrism  heroism  dualism  ecosystem  pilgrim  egoism  egotism  eroticism  nihilism  anarchism  animism  exorcism  stoicism  archaism  solecism  tropism  mechanism  algorithm  organism  socialism  feminism  journalism  optimism  terrorism  activism  cynicism  dynamism  modernism  pessimism  rheumatism  catechism  fatalism  logarithm  pacifism  paganism  paroxysm  chauvinism  elitism  euphemism  fetishism  heathenism  hedonism  legalism  lyricism  mannerism  nepotism  ostracism  pauperism  shamanism  albinism  isomerism  mesmerism  racialism  solipsism  synergism  witticism  futurism  purism  tokenism  criticism  communism  alcoholism  despotism  liberalism  mysticism  pluralism  symbolism  altruism  barbarism  embolism  empiricism  fanaticism  federalism  feudalism  formalism  humanism  magnetism  naturalism  positivism  relativism  scepticism  unionism  classicism  consumerism  dogmatism  militarism  narcissism  separatism  aneurism  cataclysm  commercialism  favoritism  hypnotism  parasitism  plagiarism  populism  recidivism  automatism  botulism  favouritism  negativism  neutralism  adventurism  anabolism  galvanism  monetarism  mongolism  specialism  capitalism  metabolism  nationalism  patriotism  antagonism  conservatism  skepticism  determinism  parallelism  pragmatism  radicalism  rationalism  romanticism  absolutism  anachronism  cannibalism  collectivism  evangelism  paternalism  regionalism  secularism  agnosticism  astigmatism  behaviorism  centralism  corporatism  eclecticism  isolationism  monasticism  revisionism  voluntarism  abolitionism  cretinism  ecumenism  exoticism  parochialism  perfectionism  revivalism  bimetallism  creationism  hooliganism  invalidism  minimalism  philistinism  triumphalism  imperialism  colonialism  materialism  hyperthyroidism  hypothyroidism  protectionism  emotionalism  factionalism  functionalism  mercantilism  provincialism  scholasticism  clericalism  exhibitionism  gradualism  impressionism  proselytism  puritanism  sectionalism  syndicalism  agrarianism  charlatanism  dilettantism  professionalism  bilingualism  industrialism  postmodernism  antisemitism  expansionism  sectarianism  traditionalism  expressionism  interventionism  colloquialism  neoclassicism  servomechanism  individualism  authoritarianism  internationalism  republicanism  microorganism  sensationalism  anticommunism  somnambulism  transsexualism  unilateralism  ventriloquism  fundamentalism  egalitarianism  existentialism  intellectualism  sentimentalism  evangelicalism  antiquarianism  neocolonialism  totalitarianism  utilitarianism  cosmopolitanism  multilingualism  constitutionalism  environmentalism  humanitarianism  electromagnetism  transcendentalism