Mammoth Uncensored Word List:
130 words ending with ms, 15 letters long

abstractionisms allelomorphisms andromonoecisms anthropophuisms antialcoholisms anticapitalisms antiliberalisms antimilitarisms antiquarianisms antiradicalisms apheliotropisms apocalypticisms associationisms bidialectalisms bioregionalisms breatharianisms centenarianisms centripetalisms chondrocraniums chordamesoderms conservatoriums constructivisms continentalisms cruciverbalisms cryptorchidisms cyberterrorisms dichromaticisms disciplinariums disequilibriums dissolutionisms echocardiograms egalitarianisms electromyograms encyclopaedisms endoparasitisms evangelicalisms exceptionalisms existentialisms extensionalisms ferrimagnetisms ferromagnetisms flexitarianisms fundamentalisms galvanotropisms heterochronisms heteromorphisms heterothallisms hobbledehoydoms hobbledehoyisms holometabolisms homochromatisms homoeomorphisms hypercriticisms hypochondriasms hypothyroidisms incrementalisms indifferentisms inspirationisms interactionisms intersexualisms intuitionalisms libertarianisms lipogrammatisms lymphangiograms matriarchalisms metachromatisms millenarianisms monochromatisms monolingualisms multiracialisms narcoterrorisms necessarianisms neocolonialisms nephrotomograms noncognitivisms nonequilibriums nonobjectivisms obstructionisms operationalisms overenthusiasms paleomagnetisms parajournalisms patriarchalisms pentadactylisms perfectibilisms peripateticisms phallocentrisms photoperiodisms piezomagnetisms pococuranteisms polychromatisms polysynthesisms polysynthetisms predeterminisms prescriptivisms probabiliorisms progressionisms prohibitionisms proletarianisms pseudoaneurysms pseudomorphisms psilanthropisms quattrocentisms radiostrontiums reactionaryisms restitutionisms restorationisms restrictionisms sacramentalisms semiparasitisms sensationalisms sentimentalisms servomechanisms substantialisms synaposematisms telejournalisms territorialisms tetartohedrisms theocentricisms theriomorphisms thermochromisms traditionalisms transsexualisms transvestitisms tripersonalisms trituberculisms ultramodernisms ultramontanisms unsectarianisms utilitarianisms