efficacious

adjective

ef·fi·ca·cious ˌe-fə-ˈkā-shəs How to pronounce efficacious (audio)

: having the power to produce a desired effect

an efficacious remedy

efficaciously adverb

efficaciousness noun

Did you know?

Effective, effectual, and efficient are synonyms of efficacious, but each of these words has a slightly different connotation. Efficacious suggests possession of a special quality or virtue that makes it possible to achieve a result ("a detergent that is efficacious in removing grease"). Effective stresses the power to produce or the actual production of a particular effect ("an effective rebuttal"), while effectual suggests the accomplishment of a desired result, especially as viewed after the fact ("measures taken to reduce underage drinking have proved effectual"). The last synonym, efficient, implies an acting or potential for acting that avoids loss or waste of energy ("an efficient small car").

Example Sentences

taking a cookie break while studying is one of the most efficacious ways of rejuvenating the mind that I have ever discovered

Recent Examples on the Web Over decades, UFAs have demonstrated their value by accelerating patients’ access to safe and efficacious medicines.

Wayne Winegarden, Forbes, 15 June 2022 Seriously, who can say no to efficacious clean concealers and foundations?

Kiana Murden, Vogue, 13 June 2022 Conversations on access and successfully treating psychiatric diagnoses often return to the question of efficacious medicines.

Kathleen Frazier, Variety, 20 May 2022 Though the idea of the best clean concealers might conjure up depictions of serum-like dewy makeup formulas, Lawless’s concealer proves that even skin-friendly offerings can deliver an efficacious matte finish.

Kiana Murden, Vogue, 18 May 2022 L'Occitane Known for botanical scents and pampering textures, L'Occitane's skincare and haircare products have also been multiple time GH Sustainability Award winners for their efficacious formulations and thoughtful, minimal waste packaging.

April Franzino, Good Housekeeping, 28 Apr. 2022 The two-dose regimen didn’t prove as efficacious in protecting the youngest children from infection and disease, especially against the Omicron variant, as health officials had hoped.

Alice Park, Time, 23 Mar. 2022 The cutting-edge Swiss skincare brand is famous for their impressively efficacious formulas and this assortment turns back the clock in style.

Celia Shatzman, Forbes, 5 Nov. 2021 Because mRNA vaccines like Pfizer and Moderna need to be kept cold and their global supply is sparse, medical authorities instead used less efficacious but easier to transport vaccines like Sinovac, Johnson & Johnson and AstraZeneca.

USA Today, 20 Mar. 2022 See More

单词	efficaciousness
释义	efficacious adjective ef·fi·ca·cious ˌe-fə-ˈkā-shəs : having the power to produce a desired effect an efficacious remedy efficaciously adverb efficaciousness noun Did you know? Effective, effectual, and efficient are synonyms of efficacious, but each of these words has a slightly different connotation. Efficacious suggests possession of a special quality or virtue that makes it possible to achieve a result ("a detergent that is efficacious in removing grease"). Effective stresses the power to produce or the actual production of a particular effect ("an effective rebuttal"), while effectual suggests the accomplishment of a desired result, especially as viewed after the fact ("measures taken to reduce underage drinking have proved effectual"). The last synonym, efficient, implies an acting or potential for acting that avoids loss or waste of energy ("an efficient small car"). Synonyms effective effectual efficient fruitful operative potent productive See all Synonyms & Antonyms Example Sentences taking a cookie break while studying is one of the most efficacious ways of rejuvenating the mind that I have ever discovered Recent Examples on the Web Over decades, UFAs have demonstrated their value by accelerating patients’ access to safe and efficacious medicines. Wayne Winegarden, Forbes, 15 June 2022 Seriously, who can say no to efficacious clean concealers and foundations? Kiana Murden, Vogue, 13 June 2022 Conversations on access and successfully treating psychiatric diagnoses often return to the question of efficacious medicines. Kathleen Frazier, Variety, 20 May 2022 Though the idea of the best clean concealers might conjure up depictions of serum-like dewy makeup formulas, Lawless’s concealer proves that even skin-friendly offerings can deliver an efficacious matte finish. Kiana Murden, Vogue, 18 May 2022 L'Occitane Known for botanical scents and pampering textures, L'Occitane's skincare and haircare products have also been multiple time GH Sustainability Award winners for their efficacious formulations and thoughtful, minimal waste packaging. April Franzino, Good Housekeeping, 28 Apr. 2022 The two-dose regimen didn’t prove as efficacious in protecting the youngest children from infection and disease, especially against the Omicron variant, as health officials had hoped. Alice Park, Time, 23 Mar. 2022 The cutting-edge Swiss skincare brand is famous for their impressively efficacious formulas and this assortment turns back the clock in style. Celia Shatzman, Forbes, 5 Nov. 2021 Because mRNA vaccines like Pfizer and Moderna need to be kept cold and their global supply is sparse, medical authorities instead used less efficacious but easier to transport vaccines like Sinovac, Johnson & Johnson and AstraZeneca. USA Today, 20 Mar. 2022 See More Word History Etymology borrowed from Middle French efficace "effective" or its source Latin efficāc-, efficāx "capable of fulfilling a function, effective" (from efficere "to make, bring about, produce, carry out" + -āc-, -āx, deverbal suffix denoting habitual or successful performance) + -ious — more at effect entry 1, audacious First Known Use 1528, in the meaning defined above efficaciousness noun 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 Relevance efficacy effectiveness efficiency efficacity productiveness effectualness ability potency capability strength capacity edge puissance Antonyms & Near Antonyms ineffectiveness inefficiency ineffectualness ineffectuality inability inadequacy incompetence incompetency inadequateness See More
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efficacious

adjective

Did you know?

Synonyms

Example Sentences

Word History

noun