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There are 15 fifteen-letter words containing A, D, E, L, R, S, U and Y

AMARYLLIDACEOUSamaryllidaceous adj. (Botany) Of or relating to the family Amaryllidaceae of herbaceous, perennial and bulbous flowering plants.
AMARYLLIDACEOUS adj. belonging to the Amaryllis family.
DISREPUTABILITYdisreputability n. The state of being disreputable.
DISREPUTABILITY n. the state of being disreputable.
FURFURALDEHYDESFURFURALDEHYDE n. a liquid obtained by heating bran with dilute sulphuric acid, also FURAL, FURFURAL, FURFUROL, FURFUROLE, FUROL, FUROLE.
GLUTARALDEHYDESglutaraldehydes n. Plural of glutaraldehyde.
GLUTARALDEHYDE n. a compound that contains two aldehyde groups and is used esp. in tanning leather and in the fixation of biological tissues.
HETERODACTYLOUSheterodactylous adj. (Zoology) Having the first and second toes turned backward, as in the trogons.
HETERODACTYLOUS adj. having the first and second toes turned backwards, as in trogons, and not the first and fourth as in parrots.
HYDROCEPHALUSEShydrocephaluses n. Plural of hydrocephalus.
HYDROCEPHALUS n. an accumulation of serous fluid within the cranial cavity, also HYDROCEPHALY.
HYPERSTIMULATEDhyperstimulated v. Simple past tense and past participle of hyperstimulate.
HYPERSTIMULATE v. to stimulate excessively.
INSUBORDINATELYinsubordinately adv. In an insubordinate manner.
INSUBORDINATE adv. disobedient to authority.
POLYUNSATURATEDpolyunsaturated adj. (Chemistry) Of or relating to long chain organic compounds that have multiple double bonds; polyunsaturated…
polyunsaturated adj. (Nutrition, of a fat or oil) Having a chemical structure that does not easily change into cholesterol…
POLYUNSATURATED adj. having many double or triple bonds in a molecule.
QUADRISYLLABLESquadrisyllables n. Plural of quadrisyllable.
QUADRISYLLABLE n. a tetrasyllable.
SOUTHWESTWARDLYsouthwestwardly adv. Toward the southwest.
SOUTHWESTWARDLY adv. in a southwesterly direction.
SUPERABUNDANTLYsuperabundantly adv. To a superabundant extent.
SUPERABUNDANT adv. more than ample.
UNADVENTUROUSLYunadventurously adv. In an unadventurous way.
UNADVENTUROUS adv. not adventurous, also UNADVENTROUS.
UNCONSTRAINEDLYunconstrainedly adv. In an unconstrained manner.
UNCONSTRAINED adv. not constrained.
UNDERSTANDINGLYunderstandingly adv. In an understanding manner; with empathy.
understandingly adv. (Obsolete) In a way that can be understood; intelligibly.
UNDERSTANDINGLY adv. UNDERSTANDING.

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 WikWik.org and 1Word.ws.

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See this list for:

  • English Wiktionary: 107 words
  • Scrabble in French: 2 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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