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