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
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 efficacious
These groups are not going to provide you with anything like efficacious asset protection planning despite their promises.
—
Jay Adkisson, Forbes, 25 Feb. 2025
These efficacious, natural ingredients include chamomile, California poppy, lemon verbena, linden, magnesium, rosemary and cardamom.
—Bianca Salonga, Forbes.com, 1 Apr. 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
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
See All Example Sentences for efficacious
Jay Adkisson, Forbes, 25 Feb. 2025
These efficacious, natural ingredients include chamomile, California poppy, lemon verbena, linden, magnesium, rosemary and cardamom.
—Bianca Salonga, Forbes.com, 1 Apr. 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
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
See All Example Sentences for efficacious
Recent Examples of Synonyms for efficacious
Adjective
-
The Tigers were efficient on their own end, however, scoring 48 points in the paint.—
Maddie Hartley,
Kansas City Star,
15 Mar. 2025
-
However, regardless of its size, this tiny mammal is remarkably agile and efficient.—
Georgina Jedikovska,
Interesting Engineering,
15 Mar. 2025
Adjective
-
Just last week, the president announced a 90-day pause in his tariff agenda, lowering the effective tariff rate on the EU from 20% to 10% while negotiations take place.—
Christian Datoc,
The Washington Examiner,
17 Apr. 2025
-
The Yale University Budget Lab estimates that the inflationary effects of Trump’s tariffs amount to an effective tax of $4,900 per household.—
Nik Popli,
Time,
17 Apr. 2025
Adjective
-
This threat, while at its most potent with just 24 hours left on the filing deadline clock, will continue to pose a danger to all users for some months to come.—
Davey Winder,
Forbes.com,
14 Apr. 2025
-
Seeing a leader actually step up and lead is a rarity these days, and Wyle’s blend of inspiration and vulnerability prove potent.—
Ben Travers,
IndieWire,
11 Apr. 2025
Cite this Entry
“Efficacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/efficacious. Accessed 21 Apr. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share