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There are 627 twenty-one-letter words containing I, N, O, R and Y

(page 5)

quantum␣chromodynamicsradioimmunochemicallyradioimmunoreactivityRadishes␣and␣Gooseberryrallying␣around␣the␣flagreactive␣oxygen␣speciesreciprocity␣principlesrespiratory␣bronchiolereverse␣hyperextensionrevolving-door␣syndrome revolving␣door␣syndromerhamnopolysaccharidesrides␣the␣cotton␣bicyclerobbing␣Peter␣to␣pay␣PaulRocky␣Mountain␣Kool-Aidsrole-playing␣video␣gamesRome␣wasn't␣burned␣in␣a␣dayrotary␣printing␣pressesRussell-Silver␣syndromeSan␣Joaquin␣Valley␣feversclerochronologicallyscreaming␣bloody␣murdersecondary␣fermentationsecond␣impact␣syndromesseleniuretted␣hydrogenshallow␣brooks␣are␣noisyShipton-by-Beningbroughshort␣twentieth␣centuryshunting-yard␣algorithmsilane-modified␣polymerSilver-Russell␣syndromesing␣from␣the␣same␣hymnalslaty-breasted␣tinamousSleeping␣Beauty␣problemsocial␣anxiety␣disordersocialism␣in␣one␣countrysocial␣security␣numbersSouthern␣lady's␣slipperssphenomaxillary␣fossaesphygmomanometricallyspinal␣muscular␣atrophyspinoprezygapophysealspiny␣softshell␣turtlesspondyloarthropathiesstatutory␣declarationssteady␣hand␣on␣the␣tillerstewing␣in␣one's␣own␣gravysticks␣one's␣dick␣in␣crazystrict-sense␣stationarystriking␣someone's␣fancystrongylophthalmyiidssubsidiary␣legislationsuccinic␣dehydrogenasesulfachloropyridazinesupernumerary␣rainbowsswallows␣the␣dictionarysyllabic␣abbreviationssympathetic␣vibrationssynchronization␣domainsyncytiotrophoblasticsyngenesiotransplantsTartarian␣honeysucklestawny-breasted␣tinamoustelevision␣personalitytelevision␣receive-onlyten␣points␣to␣Gryffindortephrochronologicallytert-butylhydroquinonetetrahydrocannabinolstetrahydrogestrinonestetrahydroimidizalonetetrahydropyrimidinestetramethylrhodaminestetrylammonium␣bromidethermochronologicallythiogalactopyranosidethrombendarteriectomytight␣building␣syndrometolyltrichlorosilanestomodensitometricallytrain␣operating␣companytransactional␣analysestransactional␣analysistransendomyocardiallytransgalactosylationstranslating␣dictionarytranslation␣dictionarytransphosphorylationstriacetyloleandomycintrichloromethylsilanetrickle-down␣hypothesis trickle␣down␣hypothesistricyclohexylammoniumtrifluoromethylationstrifluoromethylphenyltrimethoxyamphetaminetrimethylchlorosilanetrimethylhydroquinonetriphenylchlorosilanetriphenylphosphoniumstrypanosusceptibilitytwenty-five-thousanderstwo␣ha'pennies␣for␣a␣pennytyrannies␣of␣majoritiesuncommitted␣logic␣arrayunemployment␣insuranceurea-formaldehyde␣resinurinary␣tract␣infectionvanishing␣twin␣syndromevinyltrialkoxysilanesVirchow-Seckel␣syndromevoluntary␣aided␣schoolsvoluntary␣jurisdictionwalking␣corpse␣syndromeWashington␣cherry␣treesWest␣Riding␣of␣Yorkshirewhat␣is␣your␣phone␣number

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 379 words
  • Spanish Wiktionary: 1 word
  • Italian Wiktionary: no word
  • German Wiktionary: 48 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 18 words

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