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98 words ending with sm, 12 letters long

abolitionism aeroembolism aestheticism allomorphism anecdotalism anisotropism antiblackism antifeminism antihumanism antinepotism apocalyptism asynchronism automorphism barbarianism bicameralism bilateralism bilingualism bronchospasm charlatanism chemotropism chromaticism collectivism commensalism connubialism conservatism cryptorchism deviationism diamagnetism diastrophism dichromatism diffusionism dilettantism emotionalism endomorphism epicureanism ergastoplasm essentialism evolutionism expansionism expatriatism factionalism fraternalism geomagnetism greenbackism heliotropism hemimorphism homomorphism homothallism hydrotropism hyperrealism illiberalism incendiarism inflationism intuitionism isolationism mercantilism metamorphism metasomatism monomorphism monorchidism necrophilism obscurantism operationism overoptimism parkinsonism parochialism philistinism phototropism pictorialism pleomorphism polycentrism polyglottism polymorphism pragmaticism psychologism reductionism salvationism scapegoatism secessionism sectarianism sectionalism somnambulism spiritualism standpattism subjectivism superrealism sycophantism symmetallism syndactylism theocentrism transvestism triumphalism ultraleftism ultrarealism unitarianism universalism voluntaryism volunteerism