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