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List of 13-letter words beginning with

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There are 12 thirteen-letter words beginning with EFF

EFFECTIVENESSeffectiveness n. The property of being effective, of achieving results.
effectiveness n. The capacity or potential for achieving results.
effectiveness n. The degree to which something achieves results.
EFFECTIVITIESeffectivities n. Plural of effectivity.
EFFECTIVITY n. the state of being effective.
EFFECTUALNESSeffectualness n. The state or condition of being effectual.
EFFECTUALNESS n. the state of being effectual.
EFFECTUATIONSeffectuations n. Plural of effectuation.
EFFECTUATION n. the act of effectuating.
EFFERVESCENCEeffervescence n. The escape of gas from solution in a liquid, especially the escape of carbon dioxide from a carbonated drink.
effervescence n. Vivacity.
effervescence n. Foment.
EFFERVESCENCYeffervescency n. (Archaic) effervescence.
EFFERVESCENCY n. boiling or bubbling, also EFFERVESCENCE.
EFFERVESCIBLEeffervescible adj. Capable of effervescing.
EFFERVESCIBLE adj. capable of effervescing.
EFFICACIOUSLYefficaciously adv. In an efficacious manner.
EFFICACIOUS adv. having the power to produce a desired effect.
EFFIGURATIONSEFFIGURATION n. an elaborate, detailed description of an object or an event.
EFFLORESCENCEefflorescence n. (Chemistry) The formation of a powdery surface on crystals, as a hydrate is converted to anhydrous form…
efflorescence n. (Botany) The production of flowers.
efflorescence n. (Construction) An encrustation of soluble salts, commonly white, deposited on the surface of stone…
EFFORTFULNESSeffortfulness n. (Psychology) subjective experience of exertion or effort involved in performing an activity.
EFFORTFUL n. requiring effort.
EFFUSIOMETERSeffusiometers n. Plural of effusiometer.
EFFUSIOMETER n. an instrument for comparing the molecular weights of gases.

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: 38 words
  • Scrabble in French: 78 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: 53 words
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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