Efficacy and Validness

Efficacy

Efficacy noun - The power to produce a desired result.

Validness and efficacy are semantically related In some cases you can use "Validness" instead a noun "Efficacy".

Validness

Validness noun - The quality of having legal force or effectiveness.

Efficacy and validness are semantically related in energy topic. Sometimes you can use "Efficacy" instead a noun "Validness", if it concerns topics such as influence, genuineness, authenticity.
Cite this Source
Validness and Efficacy. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/efficacy/validness
Efficacy & Validness. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/efficacy/validness>.
Validness or Efficacy. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/efficacy/validness.
Google Ngram Viewer shows how "efficacy" and "validness" have occurred on timeline