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There are 6 fifteen-letter words containing E, F, I, N, O and 3R

CIRCUMFERENTORScircumferentors n. Plural of circumferentor.
CIRCUMFERENTOR n. a surveyor's angle-measuring compass instrument.
INTERFEROMETERSinterferometers n. Plural of interferometer.
INTERFEROMETER n. an instrument for analysing spectra of light.
INTERFEROMETRICinterferometric adj. Of or pertaining to interferometry or interferometers.
INTERFEROMETRIC adj. relating to interferometry, the use of two telescopes separated.
NEUROFIBRILLARYneurofibrillary adj. Of or pertaining to a neurofibril.
NEUROFIBRILLARY adj. of or like a neurofibril, also NEUROFIBRILAR, NEUROFIBRILLAR.
RETROREFLECTIONretroreflection n. (Physics) reflection in which the reflected rays are parallel to the incident rays.
RETROREFLECTION n. the action or use of a retroreflector.
UNDERPERFORMINGunderperforming v. Present participle of underperform.
underperforming adj. That performs less well than required.
UNDERPERFORM v. to perform insufficiently.

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: 75 words
  • Scrabble in French: 47 words
  • Scrabble in Spanish: 54 words
  • Scrabble in Italian: 148 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 69 words


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