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
These findings are the first of seven phase 3 clinical trials studying the safety and efficacy of orforglipron in people with obesity and diabetes.
—
Claire Bugos, Verywell Health, 18 Apr. 2025
The data contained in Lilly’s press release suggests the drug offers injection-like efficacy and safety, but through a daily pill, analysts said.
—Natasha Abellard, CNBC, 17 Apr. 2025
Limited staff capacity may also curtail agencies’ ability to proactively disclose information, such as data on drug efficacy and safety posted by the FDA.
—Reshma Ramachandran, The Conversation, 16 Apr. 2025
The study, which has not yet been peer-reviewed, involved 40 patients and tested both safety and efficacy of the treatment.
—Amy Feldman, Forbes.com, 9 Apr. 2025
See All Example Sentences for efficacy
Claire Bugos, Verywell Health, 18 Apr. 2025
The data contained in Lilly’s press release suggests the drug offers injection-like efficacy and safety, but through a daily pill, analysts said.
—Natasha Abellard, CNBC, 17 Apr. 2025
Limited staff capacity may also curtail agencies’ ability to proactively disclose information, such as data on drug efficacy and safety posted by the FDA.
—Reshma Ramachandran, The Conversation, 16 Apr. 2025
The study, which has not yet been peer-reviewed, involved 40 patients and tested both safety and efficacy of the treatment.
—Amy Feldman, Forbes.com, 9 Apr. 2025
See All Example Sentences for efficacy
Recent Examples of Synonyms for efficacy
Noun
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But don’t let its lightweight design fool you — tons of reviewers have raved about its efficiency.—
Clara McMahon,
People.com,
27 Apr. 2025
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Governments Must Strengthen Regulations For Phosphorus Efficiency The other side of tackling phosphorous overuse is improving its efficiency— and that is a problem that can be solved.—
Simi Thambi,
Forbes.com,
26 Apr. 2025
Cite this Entry
“Efficacy.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/efficacy. Accessed 5 May. 2025.
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