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There are 16 fifteen-letter words containing A, D, I, L, N, P, T and Y

CYCLOPENTADIENEcyclopentadiene n. (Organic chemistry) an unsaturated alicyclic hydrocarbon, C5H6; it forms complexes with some transition…
CYCLOPENTADIENE n. a colourless liquid unsaturated cyclic hydrocarbon obtained in the cracking of petroleum hydrocarbons and the distillation of coal tar, used in the manufacture of plastics and insecticides.
DISAPPOINTINGLYdisappointingly adv. In a disappointing manner.
DISAPPOINTING adv. DISAPPOINT, to fail to meet the expectation or hope of.
DISPASSIONATELYdispassionately adv. In a dispassionate manner.
DISPASSIONATE adv. not influenced by strong feeling.
ENCYCLOPAEDISTSencyclopaedists n. Plural of encyclopaedist.
encyclopædists n. Plural of encyclopædist.
ENCYCLOPAEDIST n. one who compiles encyclopaedias, also ENCYCLOPEDIST.
HYPERVENTILATEDhyperventilated v. Simple past tense and past participle of hyperventilate.
HYPERVENTILATE v. to breathe rapidly and deeply.
IMPONDERABILITYimponderability n. The state or characteristic of being imponderable.
IMPONDERABILITY n. the state of being imponderable.
INDISPUTABILITYindisputability n. The property of being indisputable.
INDISPUTABILITY n. the quality of being indisputable.
LYMPHADENITISESlymphadenitises n. Plural of lymphadenitis.
LYMPHADENITIS n. inflammation of the lymph nodes.
METHYLPHENIDATEmethylphenidate n. (Medicine) A stimulant used to treat attention deficit hyperactivity disorder and narcolepsy, better…
METHYLPHENIDATE n. a stimulant used in treating attention deficit disorder.
PENTADACTYLISMSPENTADACTYLISM n. the state of being pentadactylic.
PERIODONTICALLYPERIODONTIC adv. relating to periodontia, the branch of dentistry concerned with periodontal diseases.
PLATINOCYANIDESplatinocyanides n. Plural of platinocyanide.
PLATINOCYANIDE n. a fluorescent complex salt formed by the union of a compound of platinum and cyanide with another cyanide.
PLATITUDINOUSLYplatitudinously adv. In the manner of a platitude.
PLATITUDINOUS adv. characterized by or resembling a platitude, also PLATITUDINAL.
POLYCHLORINATEDpolychlorinated adj. (Chemistry) Having many hydrogen atoms replaced by chlorine.
POLYCHLORINATED adj. as in polychlorinated biphenyl.
UNANTICIPATEDLYunanticipatedly adv. Without being anticipated; unexpectedly.
UNANTICIPATED adv. not anticipated.
UNDEPENDABILITYundependability n. The quality of being undependable.

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: 113 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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