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There are 807 twenty-letter words containing 2I, O and Y

(page 4)

immunohybridizationsimmunologically␣naive immunologically␣naïveimmunopathologicallyimmunophenotypicallyimmunosusceptibilityinaequihymeniiferousinattentionally␣blindindividual␣psychologyinfant␣mortality␣ratesinferior␣dental␣arteryinferiority␣complexesinformation␣integrityintentional␣communityintentionalisticallyinteractionisticallyintercommunicabilityInternational␣Men's␣Dayinternational␣systemsInternet␣of␣Everythinginterprofessionalityintimacy␣coordinatorsintracytoplasmicallyiodochlorhydroxyquiniridogoniodysgenesisisopentenyladenosineisopinocampheylamineisopropylamphetamineisopropylbenzylideneisotachophoreticallyjockeying␣for␣positionkeratoepitheliopathykeyword-driven␣testingKoolpinyah␣threadtailLaroche-Saint-Cydroinelemon-bellied␣flyrobinlepidopterologicallyLiang–Barsky␣algorithmlicences␣to␣print␣moneylicenses␣to␣print␣moneylife,␣prosperity,␣healthliterary␣inquisitionslithoautotrophicallylong-haired␣dictionaryLyme␣neuroborreliosislymphangiomyomatosislymphoproliferationslymphoscintigraphieslysophosphatidic␣acidMaclaurin␣polynomialsmagnetofluidodynamicMalayo-PolynesianistsMatiyasevich's␣theoremmedial␣pterygoid␣nervemedial␣pterygoid␣platemediastinoscopicallymegakaryocytopoiesismelissopalynologicalmelissopalynologistsmethyldichloroarsinemethylglutaconic␣acidmethylisothiazolonesmethylprotogracillinmicroarchitecturallymicroautoradiographymicroenvironmentallymicroimmunoanalyzersmicrolymphocytotoxicmicromorphologicallymicrophotometricallymicrophytoplanktonicmicrotechnologicallymicrotopographicallymicroviscoamylographMiller-Dieker␣syndromeMiller␣Fisher␣syndromemillimeters␣of␣mercurymillimetres␣of␣mercurymolybdenum␣disulphideMonday␣morning␣diseasemonofixation␣syndromemonolysocardiolipinsmonoubiquitinylationmost␣significant␣bytesmucopolysaccaridosismultiprogrammabilitymyeloarchitectonicalmyeloradiculopathiesmyocardial␣infarctionnanocrystallizationsnanolithographicallynaphthylisoquinolineneocolonialisticallyneolymphangiogenesisneomyocardializationneurophysiologicallyneuropsychiatricallyneurotoxicologicallynever␣in␣a␣million␣yearsnickellotharmeyeritenitrosodimethylaminenitrosylsulfuric␣acidN-methylnipecotic␣acidnominative␣type␣systemnonconstitutionalitynoncryoglobulinaemicnondenominationalitynondeterministicallynondifferentiabilitynonhyperthermophilicnoninterdisciplinarynonprobabilisticallynonrenormalizabilitynontranscriptionallynonunderstandability non-understandabilitynorepinephrinylationnormohomocysteinemicnormotriglyceridemianormotriglyceridemicNorth␣Island␣eyebrightoctahydrocurcuminoidoctylisothiazolinoneoligacanthorhynchidsoligodendrogliopathyoligodeoxynucleotideoligodeoxythymidinesoligodesoxythymidineolive␣ridley␣sea␣turtleolive-sided␣flycatcherOlympic␣village␣effectone-day␣internationals

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 500 words
  • Spanish Wiktionary: 4 words
  • Italian Wiktionary: no word
  • German Wiktionary: 36 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 24 words

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