as in efficient
producing or capable of producing a desired result
taking a cookie break while studying is one of the most efficacious ways of rejuvenating the mind that I have ever discovered
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
as in efficacy
the power to produce a desired result
the efficaciousness of exercise in improving physical as well as emotional well-being
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of efficacious
Vogue, 30 Mar. 2025
Despite Chief Justice Warren formally writing the opinion to apply exclusively to education, its attack on segregation has—paradoxically—been most efficacious beyond that original context.
—Justin Driver, The Atlantic, 15 Mar. 2025
Oh, that’s right, there’s a measles vaccines that is over 97% efficacious against the measles after two doses are administered, which people have been getting for years.
—Bruce Y. Lee, Forbes, 15 Mar. 2025
On the other side are patients living with untreated diseases hoping that pharmaceutical companies will soon develop an efficacious treatment.
—Wayne Winegarden, Forbes, 5 Mar. 2025
See All Example Sentences for efficacious
Adjective
Thorne is also rigorously tested and has worked with independent researchers from places like Mayo Clinic and the National Institutes of Health, to ensure its products are high-performance, safe, and efficacious.
—Vogue, 30 Mar. 2025
Despite Chief Justice Warren formally writing the opinion to apply exclusively to education, its attack on segregation has—paradoxically—been most efficacious beyond that original context.
—Justin Driver, The Atlantic, 15 Mar. 2025
Oh, that’s right, there’s a measles vaccines that is over 97% efficacious against the measles after two doses are administered, which people have been getting for years.
—Bruce Y. Lee, Forbes, 15 Mar. 2025
On the other side are patients living with untreated diseases hoping that pharmaceutical companies will soon develop an efficacious treatment.
—Wayne Winegarden, Forbes, 5 Mar. 2025
See All Example Sentences for efficacious
Recent Examples of Synonyms for efficacious
Adjective
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Life hacks are methods for making daily tasks easier, more efficient, or more enjoyable.—
Paul McClure
May 24,
New Atlas,
24 May 2025
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It's powered by the fast and efficient S10 chip and boasts tons of health, fitness, and lifestyle features, including GPS workout recording, ECG, sleep and cycle tracking, music, podcast, and third-party app support.—
Cierra Cowan,
PC Magazine,
24 May 2025
Noun
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More than 100 scientific studies have been conducted to examine the safety and efficacy of using mifepristone and misoprostol to end a pregnancy.—
Alejandra O’Connell-Domenech,
The Hill,
19 May 2025
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Pharmaceutical companies have agreed to pay Hawaii $700 million to settle its lawsuit over the efficacy and safety of the blood thinner Plavix, the state attorney general's office announced Friday.—
CBS News,
CBS News,
10 May 2025
Adjective
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The university was accused of failing to establish effective mechanisms for combatting antisemitism until last summer.—
Dalia Faheid,
CNN Money,
23 May 2025
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Rather than finding an effective means to stop LLMs from following instructions included in untrusted content—something no one has managed to do yet—GitLab is mitigating the harm that can result from this behavior.—
Dan Goodin,
ArsTechnica,
23 May 2025
Adjective
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Major battlefield victories or changes in Russian politics are the most potent weapons, while sanctions can erode morale and resources.—
Ken Silverstein,
Forbes.com,
21 May 2025
-
Now, as President Trump has made challenging the nation’s wealthiest colleges a centerpiece of his second-term agenda, the endowment tax could become a potent weapon.—
Stephanie Saul,
New York Times,
20 May 2025
Cite this Entry
“Efficacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/efficacious. Accessed 30 May. 2025.
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