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