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There are 8 ten-letter words containing EFFI

EFFICACIESefficacies n. Plural of efficacy.
EFFICACY n. effectiveness.
EFFICACITYefficacity n. Efficacy.
EFFICACITY n. the state of being efficacious.
EFFICIENCEefficience n. Archaic form of efficiency.
EFFICIENCE n. (archaic) efficiency, also EFFICIENCY.
EFFICIENCYefficiency n. The extent to which time is well used for the intended task.
efficiency n. (Dated) The quality of producing an effect or effects.
efficiency n. The extent to which a resource is used for the intended purpose; the ratio of useful work to energy expended.
EFFICIENTSefficients n. Plural of efficient.
EFFICIENT n. a trained soldier, esp. one volunteering for service.
EFFIERCINGEFFIERCE v. (Spenser) to make fierce, also ENFIERCE.
EFFIGURATEeffigurate adj. (Botany, lichenology) Having a definite (lobed) shape; not effuse.
EFFIGURATE adj. having a definite shape.
INEFFICACYinefficacy n. The condition of being ineffective.
INEFFICACY n. lack of power to produce a desired effect, also INEFFICACITY.

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: 14 words
  • Scrabble in French: 24 words
  • Scrabble in Spanish: no word
  • Scrabble in Italian: 36 words
  • Scrabble in German: no word
  • Scrabble in Romanian: no word


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