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