Efficacy and Potency

Efficacy

Efficacy noun - The power to produce a desired result.
Usage example: questioned the efficacy of the alarms in actually preventing auto theft

Potency is a synonym for efficacy in effectiveness topic. In some cases you can use "Potency" instead a noun "Efficacy", when it comes to topics like efficiency, affect, cost-effectiveness. popular alternative

Potency

Potency noun - The ability to exert effort for the accomplishment of a task.

Efficacy is a synonym for potency in effectiveness topic. You can use "Efficacy" instead a noun "Potency", if it concerns topics such as power, affect, effect, cost-effectiveness. popular alternative

Nearby Words: potent, potential, potently

How words are described

high high efficacy high potency
greater greater efficacy greater potency
magical magical efficacy magical potency

Both words in one sentence

  • Polish The Turd Any variation of, "Nothing is stronger." Drugs measure their effectiveness with two different measurements; efficacy and potency.
Cite this Source
Potency and Efficacy. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/efficacy/potency
Efficacy & Potency. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/efficacy/potency>.
Potency or Efficacy. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/efficacy/potency.
Google Ngram Viewer shows how "efficacy" and "potency" have occurred on timeline