Here's what rhymes with opcration.
                        
                        
                    
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organization  explanation  association  conversation  evaluation  reputation  appreciation  compensation  conservation  expectation  exploitation  formulation  illustration  inspiration  invitation  modification  organisation  orientation  preservation  stimulation  accommodation  appropriation  assimilation  celebration  computation  condemnation  confirmation  consultation  contemplation  coordination  degeneration  depreciation  destination  deterioration  elimination  frustration  hesitation  illumination  implication  incorporation  inflammation  initiation  negotiation  proliferation  regeneration  registration  relaxation  resignation  simulation  utilization  assassination  certification  coagulation  colonization  complication  condensation  dissociation  evacuation  exaggeration  excavation  fermentation  ionization  localization  mobilization  modernization  optimization  preoccupation  ratification  replication  abbreviation  adjudication  amalgamation  augmentation  authentication  capitulation  categorization  commendation  conciliation  conflagration  conformation  consternation  constipation  consummation  deregulation  devaluation  devastation  duplication  elucidation  enumeration  exclamation  exportation  fluctuation  imputation  inactivation  inoculation  interrogation  invocation  liquidation  prolongation  provocation  refutation  regurgitation  stipulation  utilisation  vaccination  vindication  visitation  communication  concentration  consideration  examination  interpretation  civilization  classification  determination  participation  presentation  accumulation  configuration  demonstration  discrimination  justification  transportation  anticipation  approximation  confrontation  consolidation  continuation  documentation  emancipation  manipulation  qualification  amplification  civilisation  clarification  denomination  disintegration  dissemination  generalization  globalization  gratification  humiliation  infiltration  intoxication  multiplication  notification  purification  remuneration  socialization  specialization  stabilization  subordination  unification  verification  argumentation  calcification  capitalization  confederation  confiscation  denunciation  dispensation  immunization  implantation  intimidation  magnetization  menstruation  mortification  normalization  polymerization  refrigeration  renunciation  repudiation  resuscitation  segmentation  sterilization  administration  investigation  transformation  differentiation  characterization  contamination  manifestation  precipitation  recommendation  reconciliation  rehabilitation  specification  fragmentation  liberalization  privatization  pronunciation  reorganization  signification  sophistication  stratification  centralization  crystallization  democratization  extermination  hospitalization  hybridization  magnification  nationalization  ornamentation  quantification  rationalization  sedimentation  supplementation  synchronization  visualization  identification  representation  implementation  transplantation  diversification  personification  simplification  standardization  experimentation  industrialization  decentralization  excommunication  instrumentation  intensification  conceptualization  misrepresentation  Words that almost rhyme with opcration
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