Enthusiasm rhymes with:
cytoplasm, iconoclasm, neoplasm, sarcasm, abolitionism, absenteeism, absolutism, activism, adventurism, agrarianism, alcoholism, altruism, amateurism, americanism, anachronism, aneurism, anglo-catholicism, animism, antagonism, anthropomorphism, anti-catholicism, antidisestablishmentarianism, aphorism, arianism, astigmatism, atavism, authoritarianism, autism, baptism, barbarism, bilingualism, bolshevism, boosterism, bosom, botulism, buchananism, buddhism, cannibalism, capitalism, careerism, catechism, catholicism, centralism, chasm, chauvinism, chisholm, chism, chisum, classicism, collectivism, colonialism, commercialism, communism, confucianism, conservatism, conservativism, consumerism, corporatism, counterterrorism, creationism, criticism, cronyism, cubism, culturalism, cynicism, cytoplasm, dandyism, darwinism, defeatism, deism, despotism, determinism, diamagnetism, diastrophism, dimorphism, dogmatism, druidism, dualism, dwarfism, dynamism, easom, egalitarianism, egoism, egotism, electromagnetism, elitism, embolism, emotionalism, empiricism, entrepreneurialism, environmentalism, ergotism, eroticism, escapism, ethnocentrism, euphemism, evangelism, expansionism, expressionism, extremism, factionalism, fanaticism, fascism, fatalism, favoritism, federalism, feminism, ferromagnetism, fetishism, feudalism, formalism, fundamentalism, futurism, geotropism, gnosticism, gradualism, hedonism, hellenism, helotism, heroism, hinduism, hooliganism, humanism, hypnotism, iconoclasm, idealism, illusionism, imperialism, impressionism, individualism, intellectualism, internationalism, interventionism, irredentism, ism, isolationism, isomorphism, jainism, jansenism, jingoism, journalism, judaism, leftism, legalism, leninism, liberalism, lyricism, magnetism, mannerism, marxism, masochism, materialism, mccarthyism, mechanism, mercantilism, mesmerism, metabolism, methodism, microcosm, microorganism, militarism, minimalism, modalism, modernism, monasticism, monetarism, monism, monotheism, moralism, multiculturalism, multilateralism, mutualism, mysticism, narcissism, nationalism, nativism, naturalism, nazism, negativism, neoplasm, neopositivism, nepotism, nestorianism, neutralism, newsom, newsum, nihilism, nuzum, obstructionism, opportunism, optimism, organism, orgasm, ostracism, overoptimism, pacifism, paganism, parallelism, parliamentarianism, parochialism, pastoralism, paternalism, patriotism, perfectionism, peronism, pessimism, phantasm, pharisaism, pietism, plagiarism, pluralism, polymorphism, polytheism, populism, positivism, pragmatism, prism, prizm, professionalism, protectionism, protestantism, provincialism, pugilism, puritanism, racialism, racism, radicalism, reaganism, realism, recidivism, relativism, republicanism, revisionism, rheumatism, romanticism, sadism, sarcasm, satanism, schism, scism, sectarianism, secularism, semitism, sensationalism, separatism, sexism, skepticism, socialism, spasm, stalinism, statism, stigmatism, stoicism, supernaturalism, surrealism, symbolism, synergism, taoism, territorialism, terrorism, thatcherism, theism, tokenism, totalitarianism, tourism, trism, truism, unilateralism, unionism, vandalism, vegetarianism, vigilantism, voluntarism, volunteerism, voyeurism, yogiism, zionism