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There are 18 fifteen-letter words containing D, 2E, I, L, N, P 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.
DIPHENYLENIMINEdiphenylenimine n. Carbazole.
DIPHENYLENIMINE n. a derivative of benzene, aka carbazole, used in the manufacture of dyes.
DIPHENYLKETONESdiphenylketones n. Plural of diphenylketone.
DIPHENYLKETONE n. the aromatic ketone benzophenone.
ENCYCLOPAEDICALencyclopaedical adj. Of or pertaining to encyclopaediae.
encyclopædical adj. Archaic spelling of encyclopaedical.
ENCYCLOPAEDICAL adj. of or relating to an encyclopedia; comprehensive; full of information, also ENCYCLOPEDIC, ENCYCLOPEDICAL.
ENCYCLOPAEDISMSENCYCLOPAEDISM n. the compiling of encyclopaedias, also ENCYCLOPEDISM.
ENCYCLOPAEDISTSencyclopaedists n. Plural of encyclopaedist.
encyclopædists n. Plural of encyclopædist.
ENCYCLOPAEDIST n. one who compiles encyclopaedias, also ENCYCLOPEDIST.
EPICONDYLITISESEPICONDYLITIS n. inflammation of the epicondyle.
HYPERADRENALISMhyperadrenalism n. (Pathology) An excessive level of adrenal hormones in the body.
HYPERADRENALISM n. excessive activity of the adrenal gland.
HYPERVENTILATEDhyperventilated v. Simple past tense and past participle of hyperventilate.
HYPERVENTILATE v. to breathe rapidly and deeply.
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.
PERPENDICULARLYperpendicularly adv. In a perpendicular manner.
PERPENDICULAR adv. at right angles to a line or plane.
POLYNUCLEOTIDESpolynucleotides n. Plural of polynucleotide.
POLYNUCLEOTIDE n. a polymeric chain of nucleotides.
POLYVINYLIDENESpolyvinylidenes n. Plural of polyvinylidene.
POLYVINYLIDENE n. any polymer derived from halogen monomers.
SERENDIPITOUSLYserendipitously adv. By serendipity; by blind luck in combination with wisdom; by fortunate accident.
SERENDIPITOUS adv. obtained or characterized by serendipity.
SPLENDIFEROUSLYsplendiferously adv. In a splendiferous manner.
SPLENDIFEROUS adv. splendid.
UNDEPENDABILITYundependability n. The quality of being undependable.
UNINTERRUPTEDLYuninterruptedly adv. Without interruption.
UNINTERRUPTED adv. not interrupted.

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: 141 words
  • Scrabble in French: 8 words
  • Scrabble in Spanish: 1 word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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