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There are 5 fifteen-letter words beginning with EF

EFFECTIVENESSESeffectivenesses n. Plural of effectiveness.
EFFECTIVENESS n. the state of being effective.
EFFECTUALNESSESEFFECTUALNESS n. the state of being effectual.
EFFERVESCENCIESeffervescencies n. Plural of effervescency.
EFFERVESCENCY n. boiling or bubbling, also EFFERVESCENCE.
EFFICACIOUSNESSefficaciousness n. Quality of being efficacious.
EFFICACIOUS n. having the power to produce a desired effect.
EFFORTFULNESSESEFFORTFULNESS n. EFFORTFUL, requiring effort.

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 1Word.ws and WikWik.org.

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See this list for:

  • English Wiktionary: 14 words
  • Scrabble in French: 12 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: 12 words
  • Scrabble in German: no word
  • Scrabble in Romanian: 13 words


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