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List of 15-letter words beginning with

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There are 5 fifteen-letter words beginning with EF

EFFECTIVENESSES• effectivenesses n. Plural of effectiveness.
• EFFECTIVENESS n. the state of being effective.
EFFECTUALNESSES• EFFECTUALNESS n. the state of being effectual.
EFFERVESCENCIES• effervescencies n. Plural of effervescency.
• EFFERVESCENCY n. boiling or bubbling, also EFFERVESCENCE.
EFFICACIOUSNESS• efficaciousness n. Quality of being efficacious.
• EFFICACIOUS n. having the power to produce a desired effect.
EFFORTFULNESSES• EFFORTFULNESS 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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