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There are 614 eighteen-letter words containing A, D, I, N, O and Y

(page 4)

neocynaversicosideneoglyphioceratidsneurodysregulationneuropsychodynamicNew␣Democratic␣Partynitrobenzaldehydesnitrobenzhydrazidenitroferricyanidesnitroimidazopyransnitrosalicylic␣acidnonbasidiomycetousnoncardiopulmonarynoncontradictorilynondecomposabilitynon-Hodgkin␣lymphomanonhyperandrogenicnonidentifiabilitynonpolysaccharidesnonunderstandinglyoctadehydrocorrinsoligodendrocytomasomnidimensionalityomnidirectionalityordinary␣resolutionoxydehydrogenationpachyrhizodontoidsPaisley␣UndergroundPalaeodicotyledonsparathyroid␣hormoneParkinson's␣syndromeParry␣Sound␣Districtperiodic␣inequalityperitoneal␣dialysisphenylboronic␣acidsphenylbutanoic␣acidphenylcarbodiimidephenyldiazomethanePhiladelphia␣Countyphosphatidylserinephosphorocyanidatephotocycloadditionpink␣fairy␣armadilloplastohydroquinoneplaying␣Nostradamusplay␣one's␣cards␣rightplays␣one's␣hand␣rightPoland␣Is␣Not␣Yet␣Lostpolybenzimidazolespolyclonal␣antibodypolydenominationalpolydolopimorphianpolyendocrinopathypolyfunctionalisedpolyfunctionalizedpolyphenoloxidasespopulation␣pyramidspostdepositionallypostdiagnosticallypostfoundationallypredecarboxylationpredispositionallyPrince␣Edward␣Countyprobability␣densityprobationary␣periodpropagandisticallyproprietary␣tradingprotodesilylationsprotoplanetary␣discprotoplanetary␣diskpseudoanaphylacticpseudogynecomastiapseudohyponatremiapseudosynaesthesiapseudouridylationspulmonary␣docimasiapyrazolopyrimidinepyridinylimidazolepyrimidodiazepinespyroelectrodynamicquantum␣field␣theoryquasithermodynamicradiation␣chemistryradiation␣pyrometerradiculoneuropathyradioimmunoassayedradioimmunotherapyradiosynovectomiesreductionisticallyresolution␣advisoryreticulated␣pythonsretrocycloadditionrhamnosylglucosiderhamnosylglycosideround-trip␣delay␣timerumination␣syndromeSandmeyer␣reactionsSanfilippo␣syndromescansoriopterygidsscimitar-horned␣oryxsecondary␣diagonalssecondary␣drowningssecondary␣educationsecondary␣emissionssecondary␣infectionsecondary␣intentionsecondary␣liabilitysecondary␣phosphinesecondary␣predationsedimentologicallysell␣in␣May␣and␣go␣awaysell␣one's␣life␣dearlyserodiagnosticallyskinny␣drink␣of␣watersleeping␣dictionarysmall␣penis␣syndromesmokestack␣industrysodicanthophyllitesolitary␣sandpipersSouthwick␣and␣Widleyspondylarthritidesspondylodysplasticspondyloepiphysealspondyloperipheralspondylotherapistsstandard␣of␣identitystanding␣on␣ceremonystand␣on␣one's␣dignitystaphylinidologistSt␣Totteringham's␣Daystylohyoid␣ligamentsucking␣donkey␣ballssulfametoxydiazinesulfonic␣anhydridessulphonic␣anhydridesummary␣proceedingsSunnyside-Tahoe␣Citysuperextraordinarysympathoadrenergicsyringohydromyeliataken␣a␣ride␣to␣Tyburntakes␣a␣ride␣to␣Tyburntetrahydropyridine

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 392 words
  • Spanish Wiktionary: 4 words
  • Italian Wiktionary: no word
  • German Wiktionary: 42 words
  • Portuguese Wiktionary: 1 word
  • Dutch Wiktionary: 19 words

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