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