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