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There are 73 twenty-letter words containing I, O, 2P, 2S and U

ammonium␣phosphatidesaquatic␣ape␣hypothesisatmospheric␣pressuresautophosphorylationsbetapapillomaviruseschaphamaparvovirusescounterpropagandistscriss-cross␣applesaucediphosphonucleosidesEuropean␣swamp␣thistlefructosediphosphateshypophosphorous␣acidsideographic␣full␣stopsimmunization␣passportindustrial␣propertiesinfinitives␣of␣purposeinstrument␣approacheskeep␣up␣with␣the␣Joneseskept␣up␣with␣the␣JonesesMalpighian␣corpusclesneuropsychotherapistnonimmunosuppressantnonimmunosuppressiveoverimmunosuppressedpachycephalosauriansparamesonephric␣ductspathfinder␣prospectuspercussion␣idiophonesphosphofructokinasesphosphoribulokinasesphosphorofluoridatesphosphorus␣oxynitridephosphorus␣poisoningspopulation␣biologistspopulation␣inversionspostpartum␣depressionpresuppositionalistspseudoachondroplasiapseudoapproximationspseudohermaphroditespseudohypersensitivepseudoparasitisationpseudoparasitizationpseudopseudodementiapseudopseudoseizurespseudorepresentationpseudoschizophreniaspseudoschizophrenicspsychological␣autopsypunctus␣percontativusput␣the␣shits␣up␣someonered␣herring␣prospectusscalar␣triple␣productsshatting␣on␣one's␣uppersSouthern␣lady's␣slipperSouth␣Park␣Republicansspecial␣interest␣groupspecial␣unitary␣groupsspondylotherapeuticsstupid␣is␣as␣stupid␣doessulfophosphovanillinsunshine␣and␣lollipopssuperiority␣complexessuperphenomenalitiessuperspecializationssupport␣ticket␣systemssuppositio␣materialissupraphysiologicallytriphosphonucleosideturnip-rooted␣parsleysunproportionablenessunqualified␣prospectsviscosupplementation

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 141 words
  • Spanish Wiktionary: no word
  • Italian Wiktionary: 2 words
  • German Wiktionary: 28 words
  • Portuguese Wiktionary: 1 word
  • Dutch Wiktionary: 21 words

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