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Efficaciousness

noun

Definitions

Noun
  1. 1
    Quality of being efficacious. uncountable

    "In ancient mythology, the efficaciousness of the satyrion is attested, particularly in the case of Hercules."

  2. 2
    capacity or power to produce a desired effect wordnet

Etymology

From efficacious + -ness.

See also for "efficaciousness"

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