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