Mammoth Uncensored Word List:
212 words ending with sm, 12 letters long

abolitionism aeroembolism aestheticism afrocentrism allomorphism anecdotalism animalculism anisotropism antiblackism antiembolism antifeminism antihumanism antinepotism antisemitism apocalyptism apostolicism astrotourism asynchronism automobilism automorphism avuncularism barbarianism behaviourism bicameralism bilateralism bilingualism bioterrorism bronchospasm causationism cenobiticism characterism charlatanism chemotropism chromaticism classicalism coalitionism collectivism collegialism commensalism connubialism conservatism corporealism cremationism cryptorchism deuteroplasm deviationism dialecticism diamagnetism diastrophism dichromatism diffusionism dilettantism dissenterism doctrinarism draconianism dyotheletism ecoterrorism elementalism emotionalism endomorphism endothermism epicureanism episcopalism ergastoplasm essentialism eunuchoidism evangelicism evolutionism exclusionism expansionism expatriatism factionalism fantasticism fraternalism geomagnetism grammaticism greenbackism gregarianism guerrillaism gynodioecism haptotropism heliotropism hemimorphism heterosexism heterotopism hobgoblinism homomorphism homothallism hydrargyrism hydrotropism hylomorphism hyperrealism hypognathism iconophilism idiomorphism illiberalism immersionism incendiarism inflationism intuitionism isolationism justicialism laryngospasm macrorealism mediaevalism mercantilism mercurialism mesognathism mesomorphism metachronism metagnathism metamorphism metasomatism miserabilism mithridatism monomorphism monorchidism municipalism necrophilism negrophilism neonomianism newspaperism noctambulism nonformalism nyctitropism obscurantism operationism orthotropism overidealism overoptimism paedobaptism pansexualism parachronism paragnathism paramorphism parapsychism parkinsonism parochialism patriarchism patristicism perimorphism perpetualism philistinism philosophism photorealism phototropism pictorialism pleiotropism pleomorphism pollyannaism polycentrism polydemonism polyglottism polymorphism polytonalism postfeminism practicalism pragmaticism preadamitism precisianism precisionism presenteeism propagandism propheticism prosyllogism psychologism psychoticism reductionism rheomorphism russophilism russophobism saltationism salvationism saprophytism scapegoatism secessionism sectarianism sectionalism seminomadism sensationism shamateurism situationism somnambulism somniloquism spiritualism stakhanovism standpattism stercoranism strychninism subjectivism superrealism sycophantism symmetallism syndactylism synecdochism syntheticism theocentrism theomorphism traducianism transformism transvestism trinomialism triumphalism troglodytism ultraleftism ultrarealism unitarianism universalism voluntaryism volunteerism zoomagnetism zygomorphism