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
Relevance
Antonyms & Near Antonyms
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
Letter Writers, Twin Cities, 10 Nov. 2019
Recent Examples of Synonyms for efficacity
Noun
-
There’s still considerable doubt over the efficacy of AI agents in the workplace.—
Frank Landymore,
Futurism,
5 Feb. 2026
-
While early-stage trials are not designed to prove efficacy, the data could help validate epigenetic reprogramming as a viable strategy for neurodegenerative eye disease.—
Neetika Walter,
Interesting Engineering,
4 Feb. 2026
Noun
-
Mixing grapefruit, whether as a juice or in a dietary supplement, with some medications can disrupt how the drugs are processed in your body, potentially causing dangerous side effects or loss of effectiveness.—
Ross Phan,
Verywell Health,
9 Feb. 2026
-
Psyduck, one of the main Pokémon used by Misty in the series, was a water-type who could use powerful psychic moves, but the timing and effectiveness of its abilities was disrupted by its constant headaches.—
Jordan Moreau,
Variety,
9 Feb. 2026
Cite this Entry
“Efficacity.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/efficacity. Accessed 14 Feb. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
