Thesaurus

efficacy

noun

Synonyms & Antonyms of efficacy

the power to produce a desired result
  • questioned the efficacy of the alarms in actually preventing auto theft

Synonyms for efficacy

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Time Traveler for efficacy

Time Traveler

The first known use of efficacy was in the 13th century

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Thesaurus Entries Near efficacy

efficacity

efficacy

efficiency

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Cite this Entry

“Efficacy.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/efficacy. Accessed 30 Jul. 2021.

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More from Merriam-Webster on efficacy

Nglish: Translation of efficacy for Spanish Speakers

Britannica English: Translation of efficacy for Arabic Speakers

Britannica.com: Encyclopedia article about efficacy

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