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