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