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