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
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
Ingredients such as sandalwood and turmeric indicate a preference for traditional and holistic remedies known for healing properties and targeted efficacious results.
—Vogue Business Team, Vogue, 7 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
Tiney Ricciardi, Denver Post, 13 Nov. 2025
Ingredients such as sandalwood and turmeric indicate a preference for traditional and holistic remedies known for healing properties and targeted efficacious results.
—Vogue Business Team, Vogue, 7 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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The same principles can be used by engineers to develop technical systems that are robust, efficient and adaptable – just like biological solutions often are.—
Prabhat Ranjan Mishra,
Interesting Engineering,
16 Feb. 2026
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The organization would prefer the use of direct reduction furnaces, which GARD members claim is more efficient than blast furnaces and could be used to create iron for steelmaking in Northwest Indiana.—
Maya Wilkins,
Chicago Tribune,
16 Feb. 2026
Adjective
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In some cases, the companies’ internal documents raise questions about how effective or widely used those safety features are.—
Clare Duffy,
CNN Money,
22 Feb. 2026
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As gas and other utility bills in Massachusetts remain among the highest in the nation, state legislature has still taken no action to repeal the Gas System Improvement Plan, and has yet to implement any substantial or effective policies to combat soaring energy bills.—
Tim Dunn,
Boston Herald,
22 Feb. 2026
Adjective
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Marco Bellocchio‘s six-episode Italian-language drama is a living nightmare of the past that doubles as an agonizing manifestation of the present — a potent reminder that widespread stupidity isn’t confined to a single time or place.—
Ben Travers,
IndieWire,
20 Feb. 2026
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The ruling immediately imperils the cornerstone of the administration’s economic strategy, transforming America’s negotiator-in-chief into a leader stripped of his most potent leverage.—
Nick Lichtenberg,
Fortune,
20 Feb. 2026
Cite this Entry
“Efficacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/efficacious. Accessed 22 Feb. 2026.
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