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There are 414 twenty-one-letter words containing I, L, O, R, S and Y

(page 2)

gyroscopic␣stabilizersheliosynchronous␣orbithemilabyrinthectomieshepatocystic␣trianglesheteropolymerizationsheteropolysaccharideshexafluoroisobutylenehighly␣composite␣numberhighly␣sensitive␣personhigh␣probability␣tradeshistomorphometricallyhitting␣on␣all␣cylindersholly-leaved␣barberrieshow␣do␣you␣spell␣this␣wordhydrazinophthalazineshydrodesulphurisationhydrodesulphurizationhydrophosphinylationshydrophosphonylationshydrostatic␣equilibriahydroxyethylrutosideshydroxyisovaleric␣acidhydroxymethylcytosinehydroxyprostaglandinshyperbolic␣polynomialshyperbolic␣quaternionshypercholesterinaemiahypercholesterolaemiahypercholesterolaemichypercholesterolemiashypercholesterolemicshyperfibrinogenolysishyperlipoproteinemiashyperphosphorylationshyperpolarizabilitieshypervascularizationshypoelliptic␣operatorshysterical␣historicalshysterosalpingographyI␣have␣a␣bridge␣to␣sell␣youimmunocytofluorescentimmunohistomorphologyimprovisational␣comedyinclusion␣polymorphisminfraprezygapophysealinterjurisdictionallyinterorganisationallyinterprezygapophysealintertransformabilityinterventionisticallyintraprezygapophysealinversely␣proportionalisopropylthioxanthoneisostoichiometricallyKoolpinyah␣threadtailslabioglossopharyngealLanger-Giedion␣syndromelaryngobronchoscopieslemon-bellied␣flyrobinsleucoerythroblastosisleukoerythroblastosisLevy-Hollister␣syndromelife␣and␣soul␣of␣the␣partylike␣a␣kid␣in␣a␣candy␣storelike␣molasses␣in␣Januarylittle␣emperor␣syndromelow-density␣lipoproteinlower␣respiratory␣tractlying␣through␣one's␣teethLyminster␣and␣Crossbushlysophosphoglyceridesmannosylglycoproteinsmedial␣pterygoid␣musclemelaminylthioarsenatemetatranscriptionallymetaxylohydroquinonesmethoxycarbonylationsmethylthiotransferasemethyltrichlorosilanemethyltriethoxysilanemicrocrystalline␣waxesmicroelectrochemistrymicrofluorocytometersmicroviscoamylographsmigratory␣restlessnessMillard-Gubler␣syndromemonoglycosylceramidesMonro-Kellie␣hypothesismorphophysiologicallymucopolysaccharidasesmucopolysaccharidosesmucopolysaccharidosismucopolysaccharidoticmultidimensional␣arraymyocardial␣infarctionsmyristoyltransferasesnasofibrolaryngoscopyNeill-Dingwall␣syndromeneurobiopsychologicalneuropsychoanalyticalneuropsychobiologicalneuropsychopathologicneuropsychophysiologyneuropsychotoxicologynew␣relationship␣energynitrosylsulphuric␣acidnoncharacteristicallynonrepresentationallynonstereospecificallyNorth␣Island␣eyebrightsoccipital␣horn␣syndromeoctamethyltrisiloxaneolive-sided␣flycatchersopen␣circulatory␣systemorganopolymerizationsosteoarchaeologicallyosteochondrodysplasiaosteochondrodysplasicotorhinolaryngologistoxyiminocephalosporinPallister-Hall␣syndromepalmitoyltransferasespalynostratigraphicalparasympatheticolyticParkinson-plus␣syndrome

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 275 words
  • Spanish Wiktionary: 1 word
  • Italian Wiktionary: no word
  • German Wiktionary: 34 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 9 words

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