Here's what rhymes with byzantinism.
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mizzen mission rhythm arisen risen given vision listen permission prison emission omission remission fission riven position addition decision division commission driven edition admission ambition petition precision incision revision submission ignition tuition derision magician technician dentition envision imprison intermission audition stiffen glisten munition condition definition opposition tradition physician provision transition algorithm abolition ammunition cognition collision intuition nutrition partition clinician excision forgiven imposition musician subdivision supposition admonition apparition attrition demolition fruition sedition volition apposition contrition indecision logarithm patrician rendition striven logician manumission dietitian ebullition prevision readmission rescission tactician competition composition television transmission disposition repetition supervision suspicion coalition decomposition deposition inhibition politician prohibition erudition paroxysm precondition cataclysm premonition rhetorician theoretician academician imprecision recognition acquisition expedition proposition exhibition exposition superstition circumcision malnutrition mathematician preposition transposition inquisition interposition presupposition redefinition superposition disquisition electrician pediatrician statistician superimposition juxtaposition requisition extradition indisposition obstetrician diagnostician predisposition wisdom serum theorem cecum gingham system kingdom victim dictum gypsum fearsome winsome symptom pilgrim ecosystem