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