Synonyms
Examples of efficacy in a Sentence
In the planner's view, Rumsfeld had two goals: to demonstrate the efficacy of precision bombing and to "do the war on the cheap."
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Seymour M. Hersh, New Yorker, 7 Apr. 2003
Vaccines exist, but their efficacy against aerosolized plague is unknown.
—Sharon Begley et al., Newsweek, 8 Oct. 2001
… efficacy does not have to be demonstrated before homeopathic products are marketed.
—Alison Abbott et al., Nature, 26 Sept. 1996
questioned the efficacy of the alarms in actually preventing auto theft
Seymour M. Hersh, New Yorker, 7 Apr. 2003
Vaccines exist, but their efficacy against aerosolized plague is unknown.
—Sharon Begley et al., Newsweek, 8 Oct. 2001
… efficacy does not have to be demonstrated before homeopathic products are marketed.
—Alison Abbott et al., Nature, 26 Sept. 1996
questioned the efficacy of the alarms in actually preventing auto theft
Recent Examples on the Web
Binney projects efficacy results will be available in late 2026.
—Aaron Weitzman, Axios, 9 Oct. 2024
This type of programming influences life and work skills and is part of the collective efficacy that exists across the entire district.
—Madeleine Parrish, The Arizona Republic, 8 Oct. 2024
The efficacy is important, but there's other elements to it.
—Celia Shatzman, Forbes, 8 Oct. 2024
As of now, the efficacy of this system has not been established.
—New Atlas, 4 Oct. 2024
See all Example Sentences for efficacy 
Aaron Weitzman, Axios, 9 Oct. 2024
This type of programming influences life and work skills and is part of the collective efficacy that exists across the entire district.
—Madeleine Parrish, The Arizona Republic, 8 Oct. 2024
The efficacy is important, but there's other elements to it.
—Celia Shatzman, Forbes, 8 Oct. 2024
As of now, the efficacy of this system has not been established.
—New Atlas, 4 Oct. 2024
See all Example Sentences for efficacy
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'efficacy.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Cite this Entry
“Efficacy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/efficacy. Accessed 22 Oct. 2024.
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