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