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