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There are 469 twenty-letter words containing I, N, O, R, S, T and Y

(page 4)

stylomastoid␣foraminasubsynchronous␣orbitssulfamethoxypyrazinesun-synchronous␣orbitssuperextraordinarilysupermanoeuvrabilitysupersymmetrizationsswallow␣the␣dictionarysyllabic␣abbreviationsymmetric␣polynomialssympathetic␣vibrationsynaptoarchitecturessyncategorematicallysynchronisation␣proxysynchronization␣gearssynchronization␣proxysynchrotron␣radiationsyncytiotrophoblastssynergohymenotrophicsyngenesiotransplantsystemic␣circulationsTaeniopteryx␣nebulosaTartarian␣honeysuckletawny-breasted␣tinamoutectonic␣keratoplastytetrachlorobiphenylstetrahydrogestrinonetetrahydroquinolinestetrahydrothiophenestetraphenylarsoniumstetrazolopyrimidinesTheir␣Royal␣Highnessesthermodynamic␣systemsthe␣world␣is␣one's␣oysterthioglucopyranosidesthiophosphorylationsthyroarytenoid␣muscletolyltrichlorosilanetomorrow␣is␣another␣daytoo␣many␣balls␣in␣the␣airto␣whom␣this␣may␣concerntraditionalisticallytranscarbamoylationstranscardiopulmonarytransfructosylationstransgalactosylationtransgenerationalitytransglutaminylationtransphosphorylatingtransphosphorylationtribopolymerizationstrifluoroethylaminestrimethylsilylationstriphenylphosphoniumtrue-believer␣syndrome true␣believer␣syndromeTurner-Kieser␣syndrometurnip-rooted␣parsleystwenty-five-thousandertychoparthenogenesistyrannies␣of␣the␣massesultrananocrystallineultrasonographicallyultraviolet␣astronomyUnited␣States␣Attorneyuniversal␣opportunityuniversity␣extensionsuniversity␣professorsvermilion␣flycatchersvery␣important␣personsvideonystagmographicvinyltrialkoxysilanevoluntary␣aided␣schoolWashington␣cherry␣treewaving␣the␣bloody␣shirtwestern␣yellow␣wagtailwindows␣of␣opportunityWythoff␣constructionsYangtze␣River␣dolphinsyellow-browed␣antbirdsyinpterochiropteransYour␣Britannic␣Majestyyouthful␣indiscretion

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 335 words
  • Spanish Wiktionary: 3 words
  • Italian Wiktionary: no word
  • German Wiktionary: 30 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 20 words

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