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