Here's what rhymes with perforation.
                        
                        
                    
                                operation  nation  station  aspiration  affirmation  oscillation  toleration  aberration  adoration  perspiration  sedation  summation  ulceration  aeration  laceration  generation  observation  separation  admiration  deviation  isolation  salvation  violation  agitation  allocation  decoration  dissertation  domination  navigation  oxidation  saturation  termination  vacation  animation  aviation  cessation  desolation  desperation  fascination  federation  maturation  moderation  negation  veneration  vocation  allegation  appellation  bifurcation  citation  divination  germination  gestation  iteration  oration  perturbation  provocation  ablation  adulation  annotation  coloration  defamation  deflation  information  education  population  relation  situation  application  creation  formation  conversation  cooperation  duration  foundation  location  occupation  preparation  variation  activation  adaptation  conservation  declaration  elevation  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corporation  determination  imagination  legislation  presentation  publication  radiation  transformation  translation  appreciation  correlation  exploration  immigration  indication  invitation  justification  migration  modification  motivation  realization  transportation  accommodation  alienation  anticipation  approximation  assimilation  celebration  collaboration  consultation  deformation  degeneration  degradation  emancipation  excitation  frustration  inflammation  initiation  installation  irritation  medication  meditation  penetration  plantation  proclamation  proliferation  quotation  regeneration  resignation  segregation  simulation  ventilation  affiliation  annexation  annihilation  calibration  certification  compilation  deliberation  deprivation  dislocation  dissemination  dissociation  emigration  exaggeration  excavation  fermentation  filtration  graduation  intoxication  ionization  litigation  mediation  modernization  mutation  notification  ordination  polarization  ratification  retaliation  abbreviation  adjudication  alternation  amputation  castration  commendation  confiscation  consecration  constellation  consternation  constipation  coronation  culmination  dehydration  demarcation  denunciation  deputation  dispensation  elucidation  emulation  enumeration  eradication  gravitation  intimation  intonation  punctuation  renovation  subjugation  urbanization  vaccination  vindication  concentration  consideration  examination  explanation  civilization  classification  evaluation  integration  participation  regulation  reputation  calculation  compensation  cultivation  differentiation  formulation  illustration  limitation  stimulation  arbitration  computation  condemnation  confrontation  congregation  contamination  depreciation  deterioration  elimination  illumination  implication  inclination  indignation  negotiation  qualification  recreation  registration  relaxation  speculation  utilization  amplification  attenuation  civilisation  coagulation  colonization  complication  condensation  denomination  evacuation  fabrication  gratification  importation  incarnation  irradiation  mobilization  optimization  preoccupation  privatization  pronunciation  purification  realisation  replication  retardation  socialization  specialization  stratification  unification  verification  amalgamation  augmentation  authentication  calcification  capitulation  confederation  conflagration  delineation  deportation  devaluation  diversification  duplication  elongation  exaltation  exclamation  exhortation  extermination  fertilization  fibrillation  fluctuation  imputation  inauguration  inoculation  interrogation  magnification  mortification  personification  polymerization  reclamation  refrigeration  refutation  regurgitation  relocation  renunciation  resuscitation  segmentation  stipulation  organization  interpretation  identification  investigation  configuration  demonstration  discrimination  expectation  exploitation  organisation  orientation  appropriation  consolidation  contemplation  coordination  documentation  incorporation  manifestation  precipitation  specification  articulation  clarification  disintegration  fragmentation  generalization  humiliation  incubation  infiltration  localization  remuneration  signification  sophistication  stabilization  subordination  transplantation  categorization  conciliation  deregulation  exportation  hybridization  immunization  implantation  inactivation  intimidation  liquidation  magnetization  menstruation  nationalization  prolongation  quantification  rationalization  repudiation  sedimentation  sterilization  utilisation  visualization  administration  communication  representation  accumulation  characterization  continuation  manipulation  recommendation  rehabilitation  globalization  liberalization  multiplication  argumentation  capitalization  centralization  crystallization  democratization  hospitalization  intensification  normalization  ornamentation  simplification  standardization  supplementation  synchronization  implementation  reconciliation  industrialization  reorganization  decentralization  instrumentation  experimentation  excommunication  conceptualization  misrepresentation  Words that almost rhyme with perforation
occasion  haven  basin  persuasion  hasten  evasion  equation  invasion  taken  pagan  shaken  awaken  bacon  laden  maiden  layman  laymen  shaman  patron  overtaken  straighten  mistaken  undertaken  statesman  salesman  contagion  forsaken  tradesmen