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