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There are 412 eighteen-letter words containing E, I, O, 2R, S and Y

(page 3)

primary␣legislationprobability␣measurepropionylpromasineproposition␣playersproprietary␣eponymspropriosensitivityprosecution␣historyprosperity␣doctrineprosperity␣theologyprotocycloceratidsprotoplanetary␣discprotoplanetary␣diskproximoposteriorlypseudohypertrophicpsychogeriatricianpsychrometric␣chartPyrénées-OrientalespyrophosphoramidesPythagorean␣triplesradiation␣chemistryreconstructabilityreconstructibilityrecrystallisationsrecrystallizationsregistration␣countyrephosphorylationsrepresentationallyreproductive␣systemresolution␣advisoryrespiratory␣pigmentrespiratory␣systemsrestoration␣ecologyrestriction␣enzymesresynchronisationsresynchronizationsretransformabilityretrophylogenomicsretrosyntheticallyrhinolaryngoscopesribosyltransferaserosebay␣willowherbsrotational␣symmetryrumination␣syndromeSandmeyer␣reactionsscansoriopterygidsscheduled␣territorySchnitzler␣syndromescimitar-horned␣oryxsecondary␣drowningssecondary␣predationsecurity␣proceduresseismocardiographyservant␣out␣of␣liverySiberian␣rubythroatsignature␣authoritySir␣Roger␣de␣CoverleySir␣Roger␣of␣Coverleyskinny␣drink␣of␣waterslaty␣bristlefrontssling␣psychrometerssodium␣borohydridessolitary␣sandpipersspectrocolorimetryspectrofluorimetryspectrographicallyspectroheliographyspectropolarimetryspirocyclopropanesspondylarthritidesspondyloperipheralstephanoberyciformstereoisomericallystorage␣hypervisorsstrawberry␣begoniasstrongylocentrotidstrontiopyrochloresuffer␣by␣comparisonsummary␣proceedingssupercontractivitysuperextraordinarysuperiority␣complexsuperstoichiometrysupraorbital␣arterysympathoadrenergicsynchronized␣diverssyringohydromyeliasystems␣programmingtakes␣a␣ride␣to␣TyburnTaylor-White␣processtephrostratigraphytertiary␣phosphinestetrahydrocortisolthermoacoustimetrythermoresponsivityTommy␣John␣surgeriesTooley␣Street␣tailortouring␣motorcyclestransferuloylationtranshydrogenation trans-hydrogenationtranspolyisoprenestranspyloric␣planestranstheoreticallytrash␣heap␣of␣historytrichlorobiphenylstrichlorodiphenylstrichloroethylenestricresyl␣phosphatetrihexosylceramidetrihydroxybenzenestrihydroxystilbenetriisopropylsilaneturpentine␣of␣Cyprusunitary␣authoritiesureterolithotripsyureteropyeloscopicurethrocystoscopicveterinary␣hospitalveterinary␣surgeonswhite␣carbohydrateswinter-over␣syndromeYear␣Without␣a␣Summeryellow␣bristle␣grassYour␣Worshipfulnessyttrium␣iron␣garnets

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 572 words
  • Spanish Wiktionary: no word
  • Italian Wiktionary: no word
  • German Wiktionary: 41 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 14 words

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