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