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