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