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There are 611 eighteen-letter words containing 2A, I, O, S and Y

(page 4)

potassium␣guanylatepotentiostaticallyprecrystallizationpresymptomaticallyprimary␣legislationprobability␣measurepropagandisticallyprosopographicallyproteoaminoglycansprotoplanetary␣discprotoplanetary␣diskpseudoanaphylacticpseudogynecomastiapseudohyperkalemiapseudohyponatremiapseudometaphysicalpseudoparaphylliumpseudosynaesthesiapsychoacousticallypsychoacousticianspsychoanalyticallypsychobiographicalpsychodramaticallypsychogeographicalpsychogeriatricianpsychomanipulationpsychomanipulativepsychopathologicalpsychopharmaceuticpsychosemanticallypsychosomatizationpulmonary␣docimasiapyranoanthocyaninspyroglutamylationsPythagorean␣triplesquasithermodynamicradiation␣chemistryradioimmunoassayedrecrystallisationsrecrystallizationsrelational␣antonymsrepresentationallyresyllabificationsretinovasculopathyretransformabilityribosyltransferaserotational␣symmetryRoyal␣Leamington␣Sparoyal␣straight␣flushsaccopharyngiformsSaint␣Anthony's␣crosssalpingopharyngealsalpingopharyngeussalpingoscopicallysalpingovariectomySan␣Augustine␣CountySandmeyer␣reactionsschizoanalyticallysecondary␣diagonalssecondary␣educationsecondary␣liabilitysecondary␣predationseismocardiographyselenoalkoxylationsell␣in␣May␣and␣go␣awaysemiapologeticallysemibiographicallyserodiagnosticallysialoglycoproteasesialoglycosylationsialyllactosaminesSiberian␣rubythroatsigillographicallysignature␣authoritysix␣bob␣a␣day␣touristssocial␣anthropologysociopragmaticallysolitary␣sandpiperssomnambulisticallysonosalpingographyspectrographicallysplanchnocraniallySpotsylvania␣Countystandard␣of␣identitystaphylococcicidalstationary␣bicyclesstatutory␣authoritysteganographicallystratificationallystrawberry␣begoniasSt␣Totteringham's␣Daysublogarithmicallysulfametoxydiazinesulfanyloxazolinessulfosalicylic␣acidsuperagonisticallysuperextraordinarysupranutritionallysupraorbital␣arterysupraphysiologicalsympathoactivationsympathoadrenergicsympathochromaffinsympathoexcitationsympathoexcitatorysynapticulothecatesyncategorematicalsyntacticosemantictachistoscopicallytakes␣a␣ride␣to␣TyburnTaylor's␣polynomialstephrostratigraphythalassochelydiansthaumatopsyllioidsthe␣house␣always␣winsthermodynamic␣statethrombocytopaeniastitan␣primary␣schooltonsillopharyngealtransaction␣utilitytranscarbamylationtranscarboxylationtranscontinentallytranscriptionnallytranscriptomicallytransendotheliallytransferuloylationtransformationallytransglucosylatingtransglucosylationtransglycosidationtransglycosylatingtransglycosylationtranshydrogenation trans-hydrogenationtransnitrosylationtransphenomenalitytranspyloric␣planestranstheoreticallytransubstantiatoryTransylvania␣CountyTransylvanian␣HoundTransylvanian␣SaxonTransylvania␣Saxonstrash␣heap␣of␣historytricarboxylic␣acidstwo␣can␣play␣this␣game

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 515 words
  • Spanish Wiktionary: 3 words
  • Italian Wiktionary: no word
  • German Wiktionary: 18 words
  • Portuguese Wiktionary: 1 word
  • Dutch Wiktionary: 19 words

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