Efficacy and Effectuality

Efficacy

Efficacy noun - Capacity or power to produce a desired effect.
Usage example: concern about the safety and efficacy of the vaccine

Effectuality and efficacy are semantically related in affect topic. In some cases you can use "Effectuality" instead a noun "Efficacy", when it comes to topics like efficiency.

Effectuality

Effectuality noun - Power to be effective; the quality of being able to bring about an effect.

Efficacy and effectuality are semantically related in affect topic. You can use "Efficacy" instead a noun "Effectuality", if it concerns topics such as effect, efficiency.

Cite this Source
Effectuality and Efficacy. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/efficacy/effectuality
Efficacy & Effectuality. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/efficacy/effectuality>.
Effectuality or Efficacy. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/efficacy/effectuality.
Google Ngram Viewer shows how "efficacy" and "effectuality" have occurred on timeline