22 letter words
NONREPRESENTATIONALISM​26
21 letter words
ESTABLISHMENTARIANISM​30
20 letter words
ANTIAUTHORITARIANISM​25
NONDENOMINATIONALISM​25
19 letter words
HYPERPARATHYROIDISM​38
REPRESENTATIONALISM​23
18 letter words (6 words)
ANTIFERROMAGNETISM​26
COUNTERCULTURALISM​24
DIASTEREOISOMERISM​23
ENTREPRENEURIALISM​22
HYPOPARATHYROIDISM​37
POSTMILLENARIANISM​24
17 letter words (13 words)
ANTICOMMERCIALISM​27
CONGREGATIONALISM​23
CONSTITUTIONALISM​21
DENOMINATIONALISM​22
LATITUDINARIANISM​20
POSTMILLENNIALISM​23
PREDESTINARIANISM​22
PREMILLENARIANISM​23
RECONSTRUCTIONISM​23
TRANSCENDENTALISM​22
ULTRACONSERVATISM​24
UNIFORMITARIANISM​24
VALETUDINARIANISM​23
16 letter words (26 words)
ANTHROPOCENTRISM​25
ANTHROPOMORPHISM​30
ANTIEVOLUTIONISM​21
ANTIREDUCTIONISM​21
AUTHORITARIANISM​21
COLLABORATIONISM​22
COMMUNITARIANISM​24
CONTROVERSIALISM​23
COUNTERCRITICISM​24
COUNTERTERRORISM​20
ELECTROMAGNETISM​23
ENVIRONMENTALISM​23
EPIPHENOMENALISM​27
GYNANDROMORPHISM​30
HYPERPITUITARISM​28
INSTITUTIONALISM​18
INTERNATIONALISM​18
INTROSPECTIONISM​22
MULTICULTURALISM​22
NECESSITARIANISM​20
15 letter words (81 words)
PROFESSIONALISM​22
PHOTOJOURNALISM​29
TOTALITARIANISM​17
HYPERTHYROIDISM​32
THROMBOEMBOLISM​28
MULTILATERALISM​19
HUMANITARIANISM​22
INTELLECTUALISM​19
MULTILINGUALISM​20
COSMOPOLITANISM​23
INTERVENTIONISM​20
CONSTRUCTIONISM​21
STEREOISOMERISM​19
NEOCONSERVATISM​22
PRESBYTERIANISM​24
HYPOPITUITARISM​27
EXPERIMENTALISM​28
HERMAPHRODITISM​28
HYPERINSULINISM​25
SUPERNATURALISM​19
14 letter words (120 words)
FUNDAMENTALISM​22
HYPOTHYROIDISM​31
EXISTENTIALISM​23
LIBERTARIANISM​18
CONSTRUCTIVISM​23
UTILITARIANISM​16
EVANGELICALISM​22
SENSATIONALISM​16
EGALITARIANISM​17
EXCEPTIONALISM​27
TRADITIONALISM​17
CYBERTERRORISM​23
TRANSSEXUALISM​23
FERROMAGNETISM​22
CRYPTORCHIDISM​29
OBSTRUCTIONISM​20
PALEOMAGNETISM​21
INTERACTIONISM​18
INCREMENTALISM​20
SENTIMENTALISM​18
13 letter words (187 words)
EXHIBITIONISM​27
IMPRESSIONISM​19
INDIVIDUALISM​20
POSTMODERNISM​20
VEGETARIANISM​19
EXPRESSIONISM​24
PROTECTIONISM​19
COMMERCIALISM​23
MICROORGANISM​20
SADOMASOCHISM​23
REPUBLICANISM​21
NEOLIBERALISM​17
ANTITERRORISM​15
PERFECTIONISM​22
STRUCTURALISM​17
UNILATERALISM​15
FUNCTIONALISM​20
PROGRESSIVISM​21
TRANSEXUALISM​22
HOMEOMORPHISM​27
12 letter words (206 words)
POLYMORPHISM​26
CONSERVATISM​19
VOLUNTEERISM​17
HOMOMORPHISM​26
SPIRITUALISM​16
BILINGUALISM​17
UNIVERSALISM​17
AUTOMORPHISM​21
SECTARIANISM​16
METAMORPHISM​23
COLLECTIVISM​21
ISOLATIONISM​14
REDUCTIONISM​17
PARKINSONISM​20
BRONCHOSPASM​23
EXPANSIONISM​23
ESSENTIALISM​14
MERCANTILISM​18
GEOMAGNETISM​18
TRANSVESTISM​17
11 letter words (242 words)
NATIONALISM​13
IMPERIALISM​17
CATHOLICISM​20
COLONIALISM​15
CREATIONISM​15
PARALLELISM​15
MATERIALISM​15
ISOMORPHISM​20
ROMANTICISM​17
CONSUMERISM​17
ABSENTEEISM​15
DETERMINISM​16
ASTIGMATISM​16
CANNIBALISM​17
REGIONALISM​14
AGNOSTICISM​16
RATIONALISM​13
OBJECTIVISM​27
ANACHRONISM​18
NUCLEOPLASM​17
10 letter words (252 words)
METABOLISM​16
JOURNALISM​19
ENTHUSIASM​15
CAPITALISM​16
ALCOHOLISM​17
PLAGIARISM​15
LIBERALISM​14
EVANGELISM​16
PATRIOTISM​14
SKEPTICISM​20
FEDERALISM​16
ECOTOURISM​14
LESBIANISM​14
SURREALISM​12
RELATIVISM​15
PRAGMATISM​17
MILITARISM​14
SECULARISM​14
ANTAGONISM​13
RHEUMATISM​17
9 letter words (276 words)
MECHANISM​18
TERRORISM​11
CRITICISM​15
COMMUNISM​17
SOCIALISM​13
VANDALISM​15
SYMBOLISM​18
MYSTICISM​18
MAGNETISM​14
MODERNISM​14
CYTOPLASM​18
FORMALISM​16
PLURALISM​13
EXTREMISM​20
CATECHISM​18
ANARCHISM​16
SHAMANISM​16
VOYEURISM​17
MASOCHISM​18
MICROCOSM​17
8 letter words (225 words)
ACTIVISM​15
ORGANISM​11
FEMINISM​15
OPTIMISM​14
NEOPLASM​12
ANEURYSM​13
EXORCISM​19
HUMANISM​15
IDEALISM​11
CYNICISM​17
PAGANISM​13
EMBOLISM​14
ALTRUISM​10
DYNAMISM​16
URBANISM​12
HEDONISM​14
NIHILISM​13
UNIONISM​10
PACIFISM​17
SATANISM​10
7 letter words (113 words)
TOURISM​9
BAPTISM​13
REALISM​9
FASCISM​14
ATHEISM​12
SARCASM​11
HEROISM​12
DUALISM​10
ELITISM​9
LEFTISM​12
ANIMISM​11
EGOTISM​10
STATISM​9
TROPISM​11
BRUXISM​18
CHARISM​14
FAUVISM​15
TEXTISM​16
ATOMISM​11
PIETISM​11
6 letter words (42 words)
ORGASM​9
RACISM​10
AUTISM​8
SADISM​9
NUDISM​9
SEXISM​15
SCHISM​13
THEISM​11
CUBISM​12
CHRISM​13
EGOISM​9
AGEISM​9
TRUISM​8
HOLISM​11
MONISM​10
CHIASM​13
MUTISM​10
AUDISM​9
BONISM​10
CIVISM​13
5 letter words (13 words)
PRISM​9
CHASM​12
SPASM​9
DEISM​8
PLASM​9
SEISM​7
ABYSM​12
AGISM​8
APISM​9
MIASM​9
ODISM​8
TUISM​7
ZOISM​16
4 letter words
JISM​13
WASM​9
GISM​7
3 letter words
ISM​5