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