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