as in effectiveness
the power to produce a desired result
questioned the efficacy of the alarms in actually preventing auto theft
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Recent Examples of efficacy
The company is conducting an open-label extension trial to assess the long-term safety and efficacy of brilaroxazine in patients with stable schizophrenia.
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Quartz Intelligence Newsroom, Quartz, 3 Apr. 2025
Testers consider performance across four primary categories: efficacy, safety (including ease of use), research and the science behind specific claims, as well as product value.
—Annie Blackman, Allure, 3 Apr. 2025
But the sensorial experience of the new Curl Stretch line went beyond just the ease and efficacy of the products themselves.
—Kayla Greaves, Essence, 1 Apr. 2025
This ensures compliance with regulatory requirements and prevents spoilage, which is critical for maintaining product efficacy.
—Bob Violino, CNBC, 10 Mar. 2025
See All Example Sentences for efficacy
Quartz Intelligence Newsroom, Quartz, 3 Apr. 2025
Testers consider performance across four primary categories: efficacy, safety (including ease of use), research and the science behind specific claims, as well as product value.
—Annie Blackman, Allure, 3 Apr. 2025
But the sensorial experience of the new Curl Stretch line went beyond just the ease and efficacy of the products themselves.
—Kayla Greaves, Essence, 1 Apr. 2025
This ensures compliance with regulatory requirements and prevents spoilage, which is critical for maintaining product efficacy.
—Bob Violino, CNBC, 10 Mar. 2025
See All Example Sentences for efficacy
Cite this Entry
“Efficacy.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/efficacy. Accessed 23 Apr. 2025.
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