Definition of efficaciousness

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  • efficaciousness is a valid Scrabble US word with a point value of 25
  • efficaciousness is a valid Scrabble UK word with a point value of 25
  • efficaciousness is a valid Words with friends word with a point value of 29

Definition of efficaciousness

  • capacity or power to produce a desired effect (noun)

    Synonyms

    1. efficacy

See definition of efficaciousness in Merriam Webster