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There are 879 eighteen-letter words containing A, C, H, I and Y

Acadian␣flycatchersacceleromyographicaccessory␣breathingacetylaminophenolsa␣chicken␣in␣every␣potacting␣the␣giddy␣goatacylhydroxylaminesacylphloroglucinolad-hoc␣polymorphismsaerothermodynamicsAlbany␣pitcher␣plantalgorithmic␣entropyaluminothermicallyalumoklyuchevskiteamino␣carbohydratesaminocyclohexitolsamphitheatricalityanalytic␣philosophyanaphylactic␣shocksanarchosyndicalism anarcho-syndicalismanarchosyndicalist anarcho-syndicalistangiocholecystitisanhydronucleosidesanhydrosaccharidesanisohypermetropicanthropocentricityanthropometricallyanthropopathicallyanthroposophicallyantiarrhythmogenicantiatherogenicityanticipatory␣breachantihepatotoxicityantihyperglycaemicantihyperglycemicsantihyperlipidemicantihyperuricemicsantimetaphysicallyantiphagocyticallyantipsychoanalyticantistaphylococcalantistaphylococcicaortic␣arch␣syndromeapophthegmaticallyapothecaries'␣systemaptahistochemistryarachibutyrophobiaarchaeobotanicallyarchaeographicallyarchaeonycterididsarithmetic␣geometryarsenophenylglycinarteriographicallyarylcyclohexaminesarylthioacetamidesaspidorhynchiformsastrogeophysicistsasynchronisticallyatmospheric␣railwayautobiographicallyautopsychoanalysisbacillariophyceansbackspot␣flying␣fishbacteriopheophytinbatrachomyomachianbatrachomyomachiesbeehives␣of␣activitybegan␣with␣the␣chuckybenzhydroxamic␣acidbicycloheptadienesbioautographicallybiochronologicallybiocrystallographybiophilosophicallybiophysicochemical bio-physico-chemicalbiophysiographicalbiophysiologicallybiopsychologicallybiopsychospiritualbiotechnologicallybiphosphoglyceratebishydroxamic␣acidsbishydroxycoumarinbizygomatic␣breadthbody␣cavity␣searchesbrachybasidiaceousbrachylophosaurinsbrachymetacarpaliabronchospasmolyticBudd-Chiari␣syndromeByzantine␣PatriarchCandlesby␣with␣Gunbycarbamidomethylatecarbamoylphosphinecarbonic␣anhydrasescarbonylhemoglobincarboxyhaemoglobincarboxyhemoglobinscarboxymethylationcarboxyprothrombincardiosphygmographcare␣in␣the␣communityCarniolan␣honeybeescarrying␣one's␣weightcarry␣one's␣own␣weightCauchy␣distributioncellobiohydrolasescentrodiapophysealcercidiphyllaceouschalybaeizanic␣acidChantilly␣porcelaincharacterisabilitycharacteristicallycharacterizabilitychebulic␣myrobalansChebyshev␣distanceschemical␣dependencychemical␣depilatorychemically␣impairedchemocatalyticallychemoenzymaticallychemoimmunotherapychemoprophylacticschemosyntheticallychemotaxonomicallyChicago-style␣hot␣dogChicago-style␣pizzasChicago␣typewritersChilaiditi␣syndromechlorarachniophytechloroethoxyamineschloromethylationschlorotetracyclinechlortetracyclinesChomsky␣hierarchieschondrodystrophiasChristian␣democracy Christian␣DemocracyChristocentricallychromoanasynthesischronic␣Lyme␣diseasechronobiologicallychronostratigraphyChung␣Yeung␣Festival

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 612 words
  • Spanish Wiktionary: no word
  • Italian Wiktionary: no word
  • German Wiktionary: 85 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 26 words

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