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There are 16 twelve-letter words containing A, C, E, O, S, T, U and Y

ASCOMYCETOUSascomycetous adj. (Mycology) Of or relating to the ascomycetes.
ASCOMYCETOUS adj. relating to ascomycete.
AUTOCATALYSEautocatalyse v. Alternative spelling of autocatalyze.
AUTOCATALYSE v. to effect autocatalysis, also AUTOCATALYZE.
AUTOECIOUSLYautoeciously adv. In an autoecious manner.
AUTOECIOUS adv. of fungus, etc., passing through all life stages on same species of host, also AUTECIOUS.
COETANEOUSLYCOETANEOUS adv. having the same age; coeval.
CONSUMMATELYconsummately adv. In a consummate manner.
CONSUMMATE adv. finished, complete.
COUNTERPLAYScounterplays n. Plural of counterplay.
counterplays v. Third-person singular simple present indicative form of counterplay.
COUNTERPLAY v. to make a threat or offensive position in e.g. chess intended to counter an opponent's advantage in another part of the board.
COUNTRYSEATScountryseats n. Plural of countryseat.
country␣seats n. Plural of country seat.
COUNTRYSEAT n. a house or estate in the country.
CRETACEOUSLYcretaceously adv. In a chalky manner; as or like chalk.
CRETACEOUS adv. of or resembling chalk.
EMASCULATORYemasculatory adj. Serving or tending to emasculate.
EMASCULATORY adj. tending to emasculate.
EUCALYPTOLESEUCALYPTOLE n. a volatile, terpene-like oil extracted from the eucalyptus, also EUCALYPTOL.
GRANULOCYTESgranulocytes n. Plural of granulocyte.
GRANULOCYTE n. a kind of white blood cell.
MYCETOMATOUSmycetomatous adj. Relating to a mycetoma.
MYCETOMATOUS adj. of or like mycetoma, a chronic fungus infection.
POLYCHAETOUSpolychaetous adj. Relating to polychaetes.
POLYCHAETOUS adj. of or like a polychaete, a type of aquatic worm, also POLYCHETOUS.
STEREOACUITYstereoacuity n. Stereoscopic acuity.
STEREOACUITY n. the degree to which a person is aware of the separation of objects along the line of sight.
STYRACACEOUSstyracaceous adj. (Botany) Relating to the Styracaceae.
STYRACACEOUS adj. belonging to the storax family.
ZYGOCACTUSESZYGOCACTUS n. a genus of Brazilian cactus, aka the Christmas cactus.

Scrabble words — in black are valid world wide — in RED are not valid in North America — in GREEN are valid only in North America.
Definitions are short excerpt from the 1Word.ws and WikWik.org.

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See this list for:

  • English Wiktionary: 101 words
  • Scrabble in French: 10 words
  • Scrabble in Spanish: 19 words
  • Scrabble in Italian: 1 word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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