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There are 404 twenty-one-letter words containing I, O, P, S and Y

absorption␣dynamometerabsorption␣hygrometersaccidentally-on-purpose accidentally␣on␣purposeadsorption␣calorimetryalkylhydroperoxidasesallopolyploidisationsallopolyploidizationsalternative␣hypothesesalternative␣hypothesisaminopolycarboxylatesamplitude␣spectroscopyanaphylactoid␣purpurasankylosing␣spondylitisantipsychotherapeuticarginylaminopeptidase arginyl␣aminopeptidaseArgyll␣Robertson␣pupilsAsk␣a␣Stupid␣Question␣Dayaspirational␣recyclingasymptotic␣giant␣branchatomic␣force␣microscopyatypical␣antipsychoticautodephosphorylatingautodephosphorylationautophosphorylationalautopolyploidizationsbacteriohopanepolyolsbehavioural␣psychologybenzyloxyphthalimidesbiphosphoglyceric␣acidCalifornia-style␣pizzascardioparasympatheticcasualty␣of␣superioritycatastrophic␣mortalitycatch␣you␣on␣the␣flip␣sideChinese␣Communist␣Partycholecystographicallycholecystolithotripsycholedocholithotripsyclassical␣unemploymentcoming␣up␣with␣snake␣eyescommand␣responsibilityCommunist␣Party␣of␣Chinacomputationally␣securecontinental␣philosophycraniopharyngiomatouscriminal␣psychologistscryptocrystallizationcultural␣phylogeneticscyclohexadepsipeptidecyclooctadepsipeptidecyclotomic␣polynomialscystohepatic␣trianglescytohistopathologicaldeacetylcephalosporindefinitions␣by␣pointingdermatohistopathologydestroyer␣minesweepersdiabetic␣embryopathiesdihydrodesoxymorphinedihydrosphingomyelinsdihydroxynaphthalenesdihydroxyphenylisatindiisopropylethylaminediisopropyltryptaminedimethoxyamphetaminesdimethylphenylsilanoldimethylpolysiloxanesdiphosphatidylcholinediscretionary␣spendingdisjoint␣union␣topologydocumentary␣hypothesisdolichyldiphosphatasedomestic␣policy␣councildonor-specific␣antibodydwarf␣spheroidal␣galaxydysgranulocytopoiesiseducational␣psychologyelectrohypersensitiveelectrohysterographicelectropolymerisationemphysematous␣cystitisencephalomyelopathiesendopolyploidizationseosinophil␣granulocyteepidemic␣polyarthritisepoxyeicosapentaenoicethylene␣interpolymersetiopathophysiologiesetiopathophysiologistEuropean␣river␣lampreysexploding␣head␣syndromeexploratory␣committeesexplosive␣cyclogenesesexplosive␣cyclogenesisexternopyramidisationfibroepithelial␣polypsfield␣emission␣displaysflexible␣sigmoidoscopyfluorotriphenylsilaneforwards␣compatibilityfull␣of␣the␣joys␣of␣springgalactopyranosylaminegalactosylsphingosineglycerolphospholipidsglycerophosphocholineglycerophosphodiesterglycerophosphoric␣acidglycophosphoinositolsglycosphingolipidosisglycosylsphingolipidsgyroscopic␣stabilizershepatocystic␣triangleshepatonephric␣syndromeheteropolymerizationsheteropolysaccharideshigh-fructose␣corn␣syrup high␣fructose␣corn␣syruphighly␣composite␣numberhighly␣sensitive␣personhigh-occupancy␣vehicles high␣occupancy␣vehicles

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 289 words
  • Spanish Wiktionary: 1 word
  • Italian Wiktionary: no word
  • German Wiktionary: 34 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 25 words

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