Efficaciousness

noun

noun ·Rare ·Advanced level

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

Synonyms

All synonyms
efficacyefficacyefficiency

Example

More examples

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

Etymology

From efficacious + -ness.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.