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There are 45 eighteen-letter words containing 2H, 2I, O, S and U

air-cushion␣vehicles air␣cushion␣vehiclesamphisphaeriaceousaphthous␣stomatitisbowmouth␣guitarfishchlorosulpholipidschurch␣affiliationsChurch␣Slavonicismsdiamonds␣in␣the␣roughdimethylsulphoxide dimethyl␣sulphoxideHeimlich␣manoeuversHeimlich␣manoeuvreshighest-functioning highest␣functioninghistioneutrophilichistoarchitecturalhistoarchitecturesHoughton␣Saint␣Gileshydrogen␣disulphidehydrosulphuric␣acidliving␣over␣the␣brushneighbouring␣rightsneoichthyosauriansneurohistochemicalneurophilosophicalnoughtwithstanding nought-withstanding nought␣withstandingphilosophunculistspseudodiphtheriticpseudophilosophiespseudoxyrhophiinesrunning␣for␣the␣hillsSchopenhauerianismsodium␣hypochloritesodiumthiosulphate sodium␣thiosulphatespurious␣diphthongssubdolichocephalicsulphochlorinationsulphonic␣anhydrideTauberbischofsheimtitular␣of␣the␣titheswho␣writes␣this␣stuff

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 36 words
  • Spanish Wiktionary: no word
  • Italian Wiktionary: no word
  • German Wiktionary: 53 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 14 words

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