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efficacy

[ef-i-kuh-see] / ˈɛf ɪ kə si /


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.

Sanofi said it would stop a late-stage study of an experimental treatment for a rare immune disorder after concluding the drug was unlikely to deliver sufficient efficacy.

From The Wall Street Journal • Jun. 10, 2026

He views Lilly’s selective amylin agonist, eloralintide, a once-weekly injectable and potential obesity treatment, as another potential winner, noting its potentially best-in-class tolerability and efficacy.

From Barron's • Jun. 9, 2026

The analysts at Citi also highlighted what they said were real-world signals of waning efficacy in Wegovy pill as roughly a quarter to a third of patients are no longer losing weight.

From MarketWatch • Jun. 8, 2026

Leaving efficacy to doctors would help Americans lead longer, healthier lives.

From The Wall Street Journal • Jun. 1, 2026

Three were scientists checking the efficacy of sprays; 8 worked in greenhouses; 5 were farm workers.

From "Silent Spring" by Rachel Carson




Vocabulary lists containing efficacy


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