Here's what rhymes with platonism.
optimism prism dualism dynamism modernism pessimism schism fatalism paganism animism euphemism hedonism plagiarism shamanism racialism chrism sophism tokenism tropism mechanism organism despotism journalism liberalism pluralism terrorism feudalism humanism rheumatism unionism catechism egoism egotism nihilism regionalism anarchism aphorism chauvinism holism legalism mannerism nepotism pauperism stoicism albinism archaism automatism cretinism isomerism puritanism creationism dilettantism purism criticism communism patriotism socialism antagonism feminism heroism symbolism activism altruism barbarism cynicism determinism embolism federalism naturalism pragmatism radicalism rationalism dogmatism eroticism pacifism paternalism protectionism separatism aneurism elitism exorcism favoritism fetishism heathenism hypnotism isolationism lyricism ostracism populism revisionism abolitionism botulism ecumenism favouritism impressionism mesmerism neutralism synergism witticism bimetallism charlatanism futurism hooliganism mongolism philistinism solecism capitalism metabolism nationalism mysticism empiricism fanaticism formalism magnetism parallelism positivism relativism romanticism scepticism absolutism anachronism cannibalism classicism consumerism evangelism militarism narcissism postmodernism behaviorism centralism commercialism corporatism eclecticism parasitism provincialism recidivism traditionalism voluntarism expressionism gradualism parochialism perfectionism proselytism revivalism solipsism imperialism alcoholism colonialism conservatism materialism skepticism professionalism bilingualism collectivism republicanism secularism agnosticism astigmatism emotionalism expansionism factionalism mercantilism monasticism scholasticism sectarianism clericalism exhibitionism exoticism interventionism negativism sectionalism syndicalism individualism authoritarianism hyperthyroidism hypothyroidism industrialism totalitarianism utilitarianism antisemitism cosmopolitanism egalitarianism functionalism intellectualism microorganism sensationalism anticommunism fundamentalism internationalism existentialism sentimentalism evangelicalism somnambulism humanitarianism transcendentalism constitutionalism environmentalism electromagnetism Words that almost rhyme with platonism
mizzen mission permission rhythm arisen risen given position addition vision commission edition listen prison admission ambition petition emission omission fission audition riven condition decision definition division opposition tradition driven physician provision transition proposition repetition abolition cognition collision incision partition submission forgiven ignition remission tuition admonition attrition derision magician preposition technician apposition dentition envision imprison intermission patrician premonition stiffen dietitian ebullition glisten tactician recognition television transmission algorithm disposition precision supervision suspicion ammunition coalition deposition intuition nutrition politician prohibition revision clinician excision imposition musician supposition apparition demolition erudition fruition sedition volition contrition logarithm paroxysm precondition redefinition rendition striven cataclysm logician rhetorician academician munition prevision readmission rescission competition composition acquisition expedition exhibition exposition inhibition superstition circumcision requisition indecision presupposition manumission theoretician imprecision decomposition subdivision mathematician predisposition transposition extradition indisposition inquisition interposition superposition disquisition electrician obstetrician pediatrician statistician diagnostician juxtaposition malnutrition superimposition wisdom serum theorem cecum gingham system kingdom victim dictum gypsum fearsome winsome symptom pilgrim ecosystem