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There are 717 eighteen-letter words containing A, I, M, S and Y

(page 4)

monoacylglyceridesmonocarbonylationsmonodisciplinaritymonodispersabilitymonohydroxylationsmonoisopropylaminemonolinguisticallymonopisthocotyleanmorphosemanticallymorphostratigraphymorphosyntacticianmother␣and␣baby␣unitsmoved␣the␣yardsticksmoves␣the␣yardsticksmucopolysaccharidemulti-academy␣trustsmultidimensionallymultiple␣star␣systemmultiplying␣glassesmurder␣your␣darlingsMurphy-Lane␣bone␣skidMurray-Darling␣Basinmycobacteriologistmycobacteriophagesmycobacteriostasismycobacteriostaticmyeloarchitecturesmy␣kingdom␣for␣a␣horsemyocardial␣infarctsmyocardiodystrophymyoepitheliomatousnanodosimetricallynelfinavir␣mesylateneurolymphomatosisneuropsychodynamicNikolayevsk-na-Amurenitroimidazopyransnominal␣type␣systemsnonbasidiomycetousnoncompositionallynondecomposabilitynonmechanisticallynon-military␣servicenonterminal␣symbols non-terminal␣symbolsnormophysiologicalnot␣in␣a␣million␣yearsnot␣in␣Kansas␣anymorenotoryctemorphiansoligodendrocytomasOlympic␣Winter␣GamesomnidimensionalityOmphalos␣hypothesisosteocompatibilityotomicroscopicallyovariohysterectomyovercompensatinglyoveroptimisticallyoversentimentalityoversimplisticallyoversystematicallypalaeobiochemistrypalaeogeochemistrypaleomyrmecologistpanhypopituitarismparalytic␣dementiasparasympatholyticsparatympanic␣organsParkinson's␣syndromeparliamentary␣heels Parliamentary␣heelsparsimony␣principlePennsylvania␣Germanpermanent␣residencyphantasmagoricallypharmacophysiologypharmacopsychiatrypharmacoresistancyphosphorylceramidephyletic␣gradualismphylotranscriptomephysicochemicalismphysicomathematicspiss␣money␣up␣the␣wallplaying␣Nostradamusplay␣with␣house␣moneyplethysmographicalpolybenzimidazolespolychemotherapiespolychromatophilespolygamma␣functionspolygamomonoeciouspolymerizabilitiespolymolecularitiespolypharmacologiespolysomnographicalpolysomnographistspolyvictimizationspopular␣etymologiespopulation␣pyramidspostpericardiotomypostpolymerizationpotassium␣guanylatepotassium␣hydroxideprecompositionallypreliminary␣rulingspresymptomaticallyprimary␣legislationprimary␣transcriptsprobability␣measurepropionylpromasineproprietary␣eponymsproteoaminoglycansprotomyofibroblastpseudoetymologicalpseudogynecomastiapseudohyperkalemiapseudohyponatremiapseudometaphysicalpseudomythologicalpseudoparaphylliumpseudopolycythemiapsychocosmologicalpsychodermatologicpsychodramaticallypsychomanipulationpsychomanipulativepsychopharmaceuticpsychosemanticallypsychosemioticallypsychosomatizationpsychostimulationspsychrometric␣chartpulmonary␣docimasiapulmonary␣embolismspyrimidodiazepinespyroglutamylationspyrophosphoramidesQuadragesima␣Sundayquasithermodynamicradiation␣chemistryradioimmunoassayedradiosynovectomiesrelational␣antonymsrespiratory␣pigmentrespiratory␣systemsretransformability

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See this list for:

  • Scrabble in English: no word
  • French Wiktionary: 632 words
  • Spanish Wiktionary: 9 words
  • Italian Wiktionary: no word
  • German Wiktionary: 91 words
  • Portuguese Wiktionary: no word
  • Dutch Wiktionary: 47 words

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