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