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