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There are 64 twenty-one-letter words containing I, K, O, S and Y

alkylaminooxadiazolesalkylhydroperoxidasesankylosing␣spondylitisAnton-Babinski␣syndromeAsk␣a␣Stupid␣Question␣DayBerk-Tabatznik␣syndromeBruton's␣tyrosine␣kinasecombined␣braking␣systemcoming␣up␣with␣snake␣eyescommon␣squirrel␣monkeysCoxeter-Dynkin␣diagramscuriosity␣killed␣the␣catcycloalkylcarboxylicscysteinyl␣leukotrienesdialkylhydroxylaminesdisembarkment␣syndromedo␣you␣know␣what␣I'm␣sayingDunning-Kruger␣syndromedying␣just␣like␣one␣liveddyskeratosis␣congenitaEast␣Riding␣of␣Yorkshireerythroleukemogenesisfork-tailed␣bush␣katydidgravitational␣keyholeshave␣one's␣wicked␣way␣withhemlock␣woolly␣adelgidshistory␣of␣the␣four␣kingsichthyoplanktologistskeeping␣one's␣eyes␣peeledKoolpinyah␣threadtailsKorsun-ShevchenkivskyiKoyraboro␣Senni␣SonghaiKyasanur␣forest␣diseaseleukoerythroblastosislike␣a␣kid␣in␣a␣candy␣storelike␣molasses␣in␣Januarylymphoblastic␣leukemiaMonro-Kellie␣hypothesisoak␣processionary␣mothsOpitz-Kaveggia␣syndromeParkinson-plus␣syndromePhra␣Nakhon␣Si␣AyutthayapoikilochlorophyllousPotter-Bucky␣diaphragmsRocky␣Mountain␣Kool-Aidsscaly-breasted␣lorikeetshallow␣brooks␣are␣noisyShockley-Queisser␣limitsqueaky␣wheels␣get␣oiledsticks␣one's␣dick␣in␣crazystriking␣someone's␣fancyTartarian␣honeysucklestickling␣someone's␣fancytrickle-down␣hypothesis trickle␣down␣hypothesisvinyltrialkoxysilanesVirchow-Seckel␣syndromewalking␣corpse␣syndromewalking␣encyclopaediasWest␣Riding␣of␣Yorkshireyellow-billed␣grosbeaksyellow-rumped␣mannikinsyellow-shafted␣flickersYorkshire␣assimilation

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 14 words
  • Spanish Wiktionary: no word
  • Italian Wiktionary: no word
  • German Wiktionary: 24 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 10 words

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