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