efficacity

noun

ˌe-fə-ˈka-sə-tē How to pronounce efficacity (audio)
Definition of efficacitynext
as in efficacy
the power to produce a desired result the limited efficacity of the primitive tool as an instrument for cutting raw meat

Synonyms & Similar Words

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of efficacity Employing touchscreens for voting results in the adoption of technology for its own sake rather than to provide efficacity. — Letter Writers, Twin Cities, 10 Nov. 2019
Recent Examples of Synonyms for efficacity
  1. efficacy
  2. effectiveness
Noun
  • Immunity from flu vaccination is generally thought to last for around four to six months before losing some efficacy, according to the CDC.
    — Stephen Underwood, Hartford Courant, 2 Oct. 2026
  • Those figures are based on efficacy analysis that assumes patients remained on treatment in the trial.
    — Annika Kim Constantino, CNBC, 2 Oct. 2026
Definition of efficacy
Noun
  • The Policy Analysis Market (PAM) designed by Polk’s research firm, Net Exchange, for DARPA’s Information Awareness Office was one of many answers to questions raised about the effectiveness of US intelligence following 9/11.
    — Simon Denny, Artforum, 1 Oct. 2026
  • Beauty’s average audience size declined 30% year over year, while content performance slipped 1%, suggesting that effectiveness increasingly depends on creator quality rather than quantity.
    — Fernanda Tronco, Fortune, 1 Oct. 2026
Definition of effectiveness

Browse Nearby Words

efficaciousness
efficacity
efficacy
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Cite this Entry

“Efficacity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/efficacity. Accessed 9 Oct. 2026.

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