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There are 18 fifteen-letter words containing H, K and 2N

CHOLECYSTOKININcholecystokinin n. (Biochemistry) Any of several peptide hormones that stimulate the digestion of fat and protein; abbreviated to CCK.
CHOLECYSTOKININ n. a hormone secreted esp. by the duodenal mucosa that regulates the emptying of the gallbladder and secretion of enzymes by the pancreas and that has been found in the brain.
CHONDROSKELETONchondroskeleton n. A skeleton (of some fish and of mammal embryos) composed of hyaline cartilage.
CHONDROSKELETON n. the cartilaginous part of the skeleton of vertebrates.
COUNTERCHECKINGcounterchecking v. Present participle of countercheck.
COUNTERCHECK v. to check by opposing means.
DIPHENYLKETONESdiphenylketones n. Plural of diphenylketone.
DIPHENYLKETONE n. the aromatic ketone benzophenone.
HEARTBROKENNESSheartbrokenness n. The state or quality of being heartbroken.
HEARTBROKEN n. having a broken heart.
KINDHEARTEDNESSkindheartedness n. The quality of being kindhearted.
kind-heartedness n. Alternative form of kindheartedness.
KINDHEARTEDNESS n. the state of being kindhearted.
KITTENISHNESSESkittenishnesses n. Plural of kittenishness.
KITTENISHNESS n. KITTENISH, of or like a kitten.
PHENYLKETONURIAphenylketonuria n. (Medicine) A metabolic disorder in which individuals lack the liver enzyme phenylalanine hydroxylase…
PHENYLKETONURIA n. an inherited metabolic disorder in infants.
PHENYLKETONURICphenylketonuric adj. Having or relating to phenylketonuria.
phenylketonuric n. A person who has phenylketonuria.
PHENYLKETONURIC adj. suffering from phenylketonuria, an inherited metabolic disorder in infants.
PHYTOPLANKTONICphytoplanktonic adj. Pertaining to, or derived from, phytoplankton.
PHYTOPLANKTONIC adj. relating to phytoplankton.
THANKLESSNESSESTHANKLESSNESS n. the state of being thankless.
THANKWORTHINESSthankworthiness n. The quality or state of being thankworthy.
THANKWORTHINESS n. the state of being thankworthy.
THINKABLENESSESTHINKABLENESS n. the state of being thinkable.
THUNDERSTRICKENthunderstricken v. Past participle of thunderstrike.
thunderstricken adj. Thunderstruck.
THUNDERSTRIKE v. to strike dumb.
THUNDERSTRIKINGthunderstriking v. Present participle of thunderstrike.
thunderstriking adj. (Rare) Causing great amazement or shock.
THUNDERSTRIKE v. to strike dumb.
UNCHRISTIANLIKEunchristianlike adj. Not Christian-like.
unchristian-like adj. Alternative spelling of unchristianlike.
un-Christian-like adj. Rare spelling of unchristianlike.
UNSHAKEABLENESSUNSHAKEABLENESS n. the state of being unshakeable.
UNTHINKABLENESSunthinkableness n. The property of being unthinkable.
UNTHINKABLENESS n. the state of being unthinkable.

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: 284 words
  • Scrabble in French: 2 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: no word
  • Scrabble in German: no word
  • Scrabble in Romanian: 1 word


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