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