Here's what rhymes with proolamation.
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coordination decoration deformation designation dissertation fixation frustration hesitation implication initiation medication meditation navigation oxidation proliferation quotation recreation regeneration respiration saturation segregation simulation speculation valuation vegetation vibration affiliation annexation assassination attenuation authorization calibration colonization dedication denomination desolation dislocation dissemination distillation elaboration emigration federation fermentation filtration graduation habitation insulation irradiation localization modulation polarization preoccupation pronunciation purification remuneration retardation starvation toleration unification adjudication amalgamation amputation bifurcation castration commendation conformation connotation consummation delineation deregulation dispensation enumeration eradication escalation exclamation fluctuation gestation hydration immunization implantation imputation invocation perforation perturbation punctuation refutation renunciation sanitation sterilization stipulation urbanization utilisation vaccination visitation communication consideration examination conversation cooperation evaluation integration participation representation appreciation compensation conservation cultivation discrimination transportation anticipation appropriation arbitration collaboration computation condemnation confrontation congregation degeneration depreciation deterioration documentation excitation indignation installation negotiation penetration recommendation ventilation amplification articulation clarification coagulation compilation complication condensation consolation deliberation desperation dissipation dissociation evacuation evaporation excavation expiration fabrication fragmentation humiliation importation incarnation incubation mobilization modernization optimization privatization ratification reorganization retaliation specialization stabilization subordination transplantation 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