22 letter words
NONREPRESENTATIONALISM​26
21 letter words
ESTABLISHMENTARIANISM​30
20 letter words
ANTIAUTHORITARIANISM​25
ELECTROENCEPHALOGRAM​32
NONDENOMINATIONALISM​25
19 letter words
HYPERPARATHYROIDISM​38
REPRESENTATIONALISM​23
18 letter words (8 words)
ANTIFERROMAGNETISM​26
COUNTERCULTURALISM​24
DIASTEREOISOMERISM​23
ELECTROCORTICOGRAM​27
ELECTROPHORETOGRAM​28
ENTREPRENEURIALISM​22
HYPOPARATHYROIDISM​37
POSTMILLENARIANISM​24
17 letter words (16 words)
ANTICOMMERCIALISM​27
CONGREGATIONALISM​23
CONSTITUTIONALISM​21
DENOMINATIONALISM​22
ELECTROCARDIOGRAM​25
ELECTRORETINOGRAM​22
LATITUDINARIANISM​20
POSTMILLENNIALISM​23
PREDESTINARIANISM​22
PREMILLENARIANISM​23
RADIOCHROMATOGRAM​28
RECONSTRUCTIONISM​23
TRANSCENDENTALISM​22
ULTRACONSERVATISM​24
UNIFORMITARIANISM​24
VALETUDINARIANISM​23
16 letter words (30 words)
ANTHROPOCENTRISM​25
ANTHROPOMORPHISM​30
ANTIEVOLUTIONISM​21
ANTIREDUCTIONISM​21
AUTHORITARIANISM​21
COLLABORATIONISM​22
COMMUNITARIANISM​24
CONTROVERSIALISM​23
COUNTERCRITICISM​24
COUNTERTERRORISM​20
ELECTROMAGNETISM​23
ELECTROOCULOGRAM​23
ELECTROPHEROGRAM​26
ENVIRONMENTALISM​23
EPIPHENOMENALISM​27
GYNANDROMORPHISM​30
HYPERPITUITARISM​28
INSTITUTIONALISM​18
INTERNATIONALISM​18
INTROSPECTIONISM​22
15 letter words (95 words)
PROFESSIONALISM​22
PHOTOJOURNALISM​29
TOTALITARIANISM​17
CRYPTOSPORIDIUM​27
HYPERTHYROIDISM​32
THROMBOEMBOLISM​28
CORYNEBACTERIUM​26
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
14 letter words (139 words)
FUNDAMENTALISM​22
HYPOTHYROIDISM​31
EXISTENTIALISM​23
LIBERTARIANISM​18
DISEQUILIBRIUM​28
CONSTRUCTIVISM​23
UTILITARIANISM​16
EVANGELICALISM​22
NONEQUILIBRIUM​27
ECHOCARDIOGRAM​25
SENSATIONALISM​16
EGALITARIANISM​17
EXCEPTIONALISM​27
CONSERVATORIUM​21
TRADITIONALISM​17
CYBERTERRORISM​23
TRANSSEXUALISM​23
CYANOBACTERIUM​25
FERROMAGNETISM​22
CRYPTORCHIDISM​29
13 letter words (241 words)
EXHIBITIONISM​27
MYCOBACTERIUM​26
IMPRESSIONISM​19
INDIVIDUALISM​20
POSTMODERNISM​20
VEGETARIANISM​19
CHRYSANTHEMUM​28
EXPRESSIONISM​24
PROTECTIONISM​19
COMMERCIALISM​23
MICROORGANISM​20
SADOMASOCHISM​23
REPUBLICANISM​21
NEOLIBERALISM​17
ANTITERRORISM​15
PERFECTIONISM​22
STRUCTURALISM​17
PARALLELOGRAM​18
UNILATERALISM​15
FUNCTIONALISM​20
12 letter words (324 words)
POLYMORPHISM​26
CONSERVATISM​19
THUNDERSTORM​18
VOLUNTEERISM​17
HOMOMORPHISM​26
SPIRITUALISM​16
BILINGUALISM​17
UNIVERSALISM​17
COUNTERCLAIM​18
TRIMETHOPRIM​21
AUTOMORPHISM​21
SECTARIANISM​16
PSEUDORANDOM​18
METAMORPHISM​23
COLLECTIVISM​21
ISOLATIONISM​14
REDUCTIONISM​17
UNDERPERFORM​20
PARKINSONISM​20
DIVERTICULUM​20
11 letter words (464 words)
EQUILIBRIUM​24
CONDOMINIUM​18
NATIONALISM​13
IMPERIALISM​17
CATHOLICISM​20
COLONIALISM​15
PLANETARIUM​15
CREATIONISM​15
PARALLELISM​15
MATERIALISM​15
BLOODSTREAM​16
ISOMORPHISM​20
ROMANTICISM​17
CONSUMERISM​17
ENDOTHELIUM​17
CLOSTRIDIUM​16
ABSENTEEISM​15
DETERMINISM​16
ASTIGMATISM​16
CANNIBALISM​17
10 letter words (583 words)
CURRICULUM​16
METABOLISM​16
MILLENNIUM​14
JOURNALISM​19
MAINSTREAM​14
CONSORTIUM​14
MEMORANDUM​17
ENTHUSIASM​15
AUDITORIUM​13
DOWNSTREAM​16
CAPITALISM​16
REFERENDUM​16
ALCOHOLISM​17
PLAGIARISM​15
COMPENDIUM​19
COLLOQUIUM​23
LIBERALISM​14
EVANGELISM​16
PATRIOTISM​14
MORATORIUM​14
9 letter words (791 words)
CLASSROOM​13
MECHANISM​18
ALGORITHM​15
TERRORISM​11
CRITICISM​15
SYMPOSIUM​18
PETROLEUM​13
TRANSFORM​14
ALUMINIUM​13
ECOSYSTEM​16
POTASSIUM​13
MAGNESIUM​14
CONTINUUM​13
SUBSYSTEM​16
COMMUNISM​17
SOCIALISM​13
COURTROOM​13
PRACTICUM​17
GYMNASIUM​17
MICROFILM​18
8 letter words (785 words)
PLATFORM​15
BATHROOM​15
PLATINUM​12
SPECTRUM​14
ALUMINUM​12
TITANIUM​10
MOMENTUM​14
AQUARIUM​19
NEWSROOM​13
UPSTREAM​12
PARADIGM​14
ACTIVISM​15
ORGANISM​11
DIAZEPAM​22
MUSHROOM​15
BALLROOM​12
MONOGRAM​13
CHECKSUM​21
SHOWROOM​16
VERBATIM​15
7 letter words (478 words)
PROGRAM​12
PROBLEM​13
KINGDOM​15
WILLIAM​12
MAXIMUM​20
MINIMUM​13
FREEDOM​13
PREMIUM​13
TOURISM​9
PERFORM​14
BEDROOM​12
CONFIRM​14
UNIFORM​12
TELECOM​11
QUANTUM​18
STADIUM​10
DIAGRAM​11
INTERIM​9
CALCIUM​13
THEOREM​12
6 letter words (349 words)
SYSTEM​11
CUSTOM​10
MEDIUM​11
MUSEUM​10
BOTTOM​10
RANDOM​9
STREAM​8
REFORM​11
VACUUM​13
GRAHAM​12
WEBCAM​15
WISDOM​12
VICTIM​13
INFORM​11
REDEEM​9
SODIUM​9
VALIUM​11
RHYTHM​17
ORGASM​9
ASYLUM​11
5 letter words (183 words)
FORUM​10
ALBUM​9
CLAIM​9
DREAM​8
CREAM​9
STORM​7
ALARM​7
MODEM​10
STEAM​7
CHARM​12
REALM​7
SPERM​9
SERUM​7
BLOOM​9
DENIM​8
MAXIM​16
PRISM​9
GROOM​8
DATUM​8
PSALM​9
4 letter words (144 words)
FROM​9
THEM​9
ITEM​6
FORM​9
ROOM​6
TEAM​6
TERM​6
FILM​9
FARM​9
FIRM​9
PALM​8
SEEM​6
ATOM​6
ZOOM​15
SPAM​8
WHOM​12
WARM​9
EXAM​13
DRUM​7
BEAM​8
3 letter words (66 words)
HIM​8
TOM​5
CUM​7
MOM​7
AIM​5
ROM​5
CAM​7
RAM​5
ARM​5
SAM​5
SUM​5
JAM​12
GYM​9
DAM​6
MEM​7
SIM​5
RIM​5
NAM​5
HAM​8
DOM​6
2 letter words (6 words)
AM​4
MM​6
EM​4
UM​4
OM​4
HM​7