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There are 521 eighteen-letter words containing I, O, 2S, T and Y

abstinence␣syndromeaccessory␣breathingaccessory␣equipmentaccretionary␣prismsacetylglucosaminesacetyllactosaminesactivation␣analysesactivation␣analysisadds␣insult␣to␣injuryanaphylactic␣shocksanarchosyndicalist anarcho-syndicalistangiocholecystitisangiostrongyliasisanisotropy␣energiesanonymous␣functionsantistaphylolysinsantisymmetrisationapothecaries'␣systemaptahistochemistryaqueducts␣of␣Sylviusarabinosylcytosineassal␣horizontologyastrogeophysicistsasymptotic␣analysesasymptotic␣analysisasynchronisticallyautopsychoanalysisautosuggestibilitybackspot␣flying␣fishbiopsychospiritualbiphosphorylationsbisanthrapyrazolesbisphenylthiazolesbody␣cavity␣searchesbright␣shiny␣objectsbronchospasmolyticBronsted-Lowry␣acids Brønsted-Lowry␣acidsbucodispersibilitybusiness-to-employeeby␣the␣looks␣of␣thingscamplyobacteriosiscampylobacteriosescampylobacteriosiscaptains␣of␣industrycardiomyocytolysischemoinsensitivityChicago-style␣pizzascholecystocentesischondrodystrophiaschondrodystrophiesChristoffel␣symbolschromoanasynthesischymotrypsinolysiscirculatory␣systemscity␣administratorsclassificationallyclassification␣yardcocrystallisationscocrystallizationscolpohysterotomiescommodity␣fetishismcomputable␣analysisconceptual␣analysisConey␣Island␣hot␣dogsconspiracy␣theoriesconspiracy␣theoristcoproparasitoscopycoronary␣thrombosiscorticosensitivitycountry-fried␣steakscross-country␣skierscross-country␣skiing cross␣country␣skiingcrosshybridizationcryptobasidiaceouscryptocrystallinescrystalline␣humourscrystallochemistrycults␣of␣personalitycybercontroversiescyberconversationscyberinvestigatorscyberpsychologistscyberrelationshipscyclocondensationscyclodepsipeptidescycloisomerisationcystogastrostomiescystojejunostomiescystometrographiescystourethroscopiccytohistochemistrydacryocystectomiesdamns␣by␣associationday-age␣creationistsdegalactosylationsdeglutathionylasesdemythologisationsdendrohydrologistsdeoxynucleotidasesdephosphonylationsdephosphorylationsdepositary␣receiptsdescetyllanatosidedesynchronisationsdesynchronizationsdialytic␣telescopesdiastereochemistrydiethylstilbestroldihydrostilbenoidsdimethylsulfoxidesdiphosphorylationsdiphyllobothriasesdiphyllobothriasisdiphyllobothriosisdirty␣thunderstormsdissociation␣energydissyllabificationdissymmetrizationsdissynchronizationdysfunctionalitiesdyssynchronizationdystrophinopathiesecosystem␣engineerselastophagocytosiselectroendocytosiselectrogasdynamicselectroimmunoassayelectrosensibilityelectrosensitivityelectrosynthesizedeliminatory␣systemsempty␣stock␣workingsendocytobiologistsepididymovasostomyergasiophygophyteserythrocytopoiesiserythrodysesthesiaesthesiophysiologyethnopsychiatristsethnopsychologistsexecutory␣interestsfelony␣traffic␣stopsfibrohistiocytomasfield␣sobriety␣tests

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 674 words
  • Spanish Wiktionary: 2 words
  • Italian Wiktionary: no word
  • German Wiktionary: 69 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 38 words

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