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