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There are 12 fifteen-letter words containing E, H, 2I, R, 2T and U

AUTHORITATIVELYauthoritatively adv. In an authoritative manner, being worthy of trust.
AUTHORITATIVE adv. having or proceeding from authority.
EUTROPHICATIONSeutrophications n. Plural of eutrophication.
EUTROPHICATION n. the process of becoming eutrophic.
HYPERMUTABILITYhypermutability n. The state of being hypermutable.
HYPERMUTABILITY n. the state of being hypermutable.
ICHTHYODORULITEichthyodorulite n. (Zoology) One of the spiny plates found on the back and tail of certain skates.
ichthyodorulite n. (Geology) A fossil fish-spine found in stratified rock.
ICHTHYODORULITE n. a fossilised fish-spine, also ICHTHYODORYLITE.
MULTITHREADINGSMULTITHREADING n. a programming system that enables actions to be carried out simultaneously.
PHOTOMULTIPLIERphotomultiplier n. (Physics) A device, normally in the form of a tube, that uses a photocathode to convert photons into…
PHOTOMULTIPLIER n. a photocell with a series of dynodes which amplify the emission current by electron multiplication.
REAUTHORISATIONreauthorisation n. Alternative form of reauthorization.
REAUTHORISATION n. the process of reauthorising, also REAUTHORIZATION.
REAUTHORIZATIONreauthorization n. A second or subsequent authorization.
reauthorization n. A renewal of an authorization.
REAUTHORIZATION n. the process of reauthorizing, also REAUTHORISATION.
THIOBARBITURATEthiobarbiturate n. (Medicine) Any compound obtained from a barbiturate by the formal substitution of an oxygen atom by one of sulfur.
THIOBARBITURATE n. a salt of thiobarbituric acid similar in effect to a barbiturate.
THUNDERSTRIKINGthunderstriking v. Present participle of thunderstrike.
thunderstriking adj. (Rare) Causing great amazement or shock.
THUNDERSTRIKE v. to strike dumb.
UNAUTHORITATIVEunauthoritative adj. Not authoritative.
UNAUTHORITATIVE adj. not authoritative.
UNTHRIFTINESSESUNTHRIFTINESS n. the state of being unthrifty.

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: 92 words
  • Scrabble in French: 37 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: 46 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 33 words


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