efficacious
Usage
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
She starts by noting that the Voting Rights Act is, or was. one of the most consequential, efficacious, amply justified exercises of federal legislative power in the nation’s history.
From Slate • Apr. 30, 2026
Lilly is also developing a highly efficacious injection called retatrutide that targets GIP and GLP-1 — both of which are activated by tirzepatide — in addition to glucagon.
From MarketWatch • Apr. 1, 2026
Instead of manipulating government for their own narrow interests, the rich can add a distinctively independent-minded, public-spirited and efficacious set of voices to the national debate.
From The Wall Street Journal • Feb. 17, 2026
The team calculated that the high dose of L9LS was 70% efficacious at preventing infection and 77% efficacious at stopping disease.
From Science Magazine • May 1, 2024
“I do thank you for taking the time, Pomona,” Slughorn was saying courteously, “most authorities agree that they are at their most efficacious if picked at twilight.”
From "Harry Potter and the Half-Blood Prince" by J.K. Rowling
Vocabulary lists containing efficacious
"The Witch Boy" by Molly Knox Ostertag
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George Washington's Farewell Address (1796)
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The Prince
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