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