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There are 445 eighteen-letter words containing 2E, 2O, P and Y

(page 2)

hexabromobiphenylshexachlorobiphenylhexaphosphorylatedhomopiperonylaminehomopolynucleotidehydroelectric␣powerhydroencephalocelehydropletismometerhydroxyperoxidaseshymenopterologicalhymenopterologistshyperaldosteronismhyperbolic␣geometryhypercompensationshyperconcentrationhypercondensationshyperconscientioushyperconsciousnesshypercorticoidemiahypereosinophiliashyperinterpolationhypermetamorphoseshypermetamorphosishypermetamorphotichypermetropizationhypermonosyllableshypermyoglobinemiahyperoestrogenismshyperosmoregulatorhyperphosphorylatehyperproliferationhyperrecombinationhypertechnologicalhypocholesteraemiahypochondrogenesishypocomplementemiahypocomplementemichypoelectrolytemiahypofibrinogenemiahypofibrinogenemichypohemoglobinemiahypomyelinogenesishypooestrogenaemiahyporesponsivenesshypothalamectomiesimmunochemotherapyimmunoepidemiologyimmunonephelometryinferiority␣complexintraoesophageallyintraperitoneouslyisopropylethyleneskeep␣someone␣companykeeps␣one's␣powder␣dryketophenylbutazoneLaguerre␣polynomiallay␣down␣one's␣weaponsLegendre␣polynomiallithokelyphopedionlymphoepitheliomaslymphohematogenousmacroglycopeptidesmacrophanerophytesmandatory␣reportersmechanoreciprocitymesopolysaccharidemetalloproteolyticmetapolycentromeremethylcyclopropanemethylpolysiloxanemethylprednisolonemethylprogesteronemicroelectrospraysmicrohymenopteransmicrophanerophytesmisery␣loves␣companymonohydroperoxidesmonophenylbutazonemore␣power␣to␣your␣armmycobacteriophagesmyeloproliferatingmyeloproliferationmyeloproliferativemyoepitheliomatousnanoelectrosprayedneoglyphioceratidsnephroureterectomyneuroendophenotypeneuropathogenicityneurophenomenologyneurophysiotherapyneuropsychopathiesnoncomplementaritynonhyperandrogenicnonidentity␣problemnonintrospectivelynonthienopyridinesno␣peace␣for␣the␣wearynostocyclopeptidesnucleodepolymerasenucleopolyhedrosisoligohymenophoreanoligohypomenorrheaoligoparaphenyleneon-the-fly␣encryptionopened␣someone's␣eyesoptoelectronicallyorganoheterotrophyosteochondrophytesovercompensatinglyoverplayed␣one's␣handoxygen␣catastrophesoysterman's␣stoppersp-acetylaminophenolpalaeobiochemistrypalaeobiodiversitypalaeobiogeographyPalaeodicotyledonspalaeoecologicallypalaeoepidemiologypalaeogeochemistrypalaeohydrogeologypalaeoneuroanatomypalaeotempestologypalaeozygopleuridspale␣clouded␣yellows Pale␣Clouded␣Yellowspaleoanthropometrypaleochemotaxonomypaleogeomorphologypaleomyrmecologistpanhypoproteinemiapanhypoproteinemicpapilioerythrinonepellitory␣of␣the␣wallpentafluorobenzoylpentafluorostyreneperchloroethylenesperfluoroalkylatedperfluoropolyetherpericonceptionallyperonosporomycetesperturbation␣theoryPeterborough␣Countyphantom␣eye␣syndromepharmacophenotypespharyngoesophagealphenomenologicallyphenylchlorosilanephiloprogenitivelyphilosophers␣by␣fire

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 317 words
  • Spanish Wiktionary: 1 word
  • Italian Wiktionary: no word
  • German Wiktionary: 25 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 31 words

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