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
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Recent Examples of efficacious
Wood Brooks, Robson and Fisher all offer neat digestible summaries at the end of their chapters to consolidate their strategies for how the reader might best conduct efficacious, generative conversations.
—
Lamorna Ash, The Dial, 25 Nov. 2025
Full-spectrum products are believed to be more efficacious because cannabinoids are more effective when working together, a concept known as the entourage effect.
—Tiney Ricciardi, Denver Post, 13 Nov. 2025
Kyle added that the brand’s efficacious doses will be a key differentiator on the market, as many patch brands opt for smaller, clear stickers for the aesthetic, though these may not be as effective.
—Emily Burns, Footwear News, 6 Nov. 2025
This means efficacious skincare and sleek, luminous beauty.
—Essence, 18 Sep. 2025
See All Example Sentences for efficacious
Lamorna Ash, The Dial, 25 Nov. 2025
Full-spectrum products are believed to be more efficacious because cannabinoids are more effective when working together, a concept known as the entourage effect.
—Tiney Ricciardi, Denver Post, 13 Nov. 2025
Kyle added that the brand’s efficacious doses will be a key differentiator on the market, as many patch brands opt for smaller, clear stickers for the aesthetic, though these may not be as effective.
—Emily Burns, Footwear News, 6 Nov. 2025
This means efficacious skincare and sleek, luminous beauty.
—Essence, 18 Sep. 2025
See All Example Sentences for efficacious
Recent Examples of Synonyms for efficacious
Adjective
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An efficient Cabrera issued only one walk and quickly erased the lone hit — a Nolan Schanuel one-out single in the fourth — with a double play from the next hitter.—
Meghan Montemurro,
Chicago Tribune,
31 Mar. 2026
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The style is refreshingly informal yet efficient, ensuring guests feel warm-and-fuzzy cared-for, without being overfussed.—
Condé Nast,
Condé Nast Traveler,
31 Mar. 2026
Adjective
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Gabapentin has proved effective at helping some mastectomy patients with stubborn pain, while others have responded to electrodes implanted in their spinal column, according to the Baylor study, published in 2024.—
Brett Kelman,
USA Today,
4 Apr. 2026
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While these methods remain effective, excessive tilling can break down soil aggregates into smaller particles, reducing soil health and increasing erosion risk.—
Anthony Reardon,
Kansas City Star,
4 Apr. 2026
Adjective
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The move took away one of Orlando’s most potent attacking threats, but the Pride continued pushing to find a goal.—
Kyle Foley,
The Orlando Sentinel,
4 Apr. 2026
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Chelmsford’s potent offense will be tough to limit and the Lions will be competitive, while Andover also figures to be a dangerous threat.—
Tom Mulherin,
Boston Herald,
4 Apr. 2026
Cite this Entry
“Efficacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/efficacious. Accessed 5 Apr. 2026.
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