Efficacy
Efficacy noun - The power to produce a desired result.
Virtue is a synonym for efficacy in effectiveness topic. In some cases you can use "Virtue" instead a noun "Efficacy", when it comes to topics like efficiency.
Mutual synonyms
How words are described
Cite this Source
Virtue and Efficacy. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/efficacy/virtue
Efficacy & Virtue. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/efficacy/virtue>.
Virtue or Efficacy. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/efficacy/virtue.
Google Ngram Viewer shows how "efficacy" and "virtue" have occurred on timeline