Efficacious
Efficacious adjective - Producing or capable of producing a desired result.
Usage example: taking a cookie break while studying is one of the most efficacious ways of rejuvenating the mind that I have ever discovered
Valid and efficacious are semantically related In some cases you can use "Valid" instead an adjective "Efficacious".
Valid
Valid adjective - According to the rules of logic.
Efficacious and valid are semantically related in right topic. Sometimes you can use "Efficacious" instead an adjective "Valid".
Nearby Words: validity, validation
Mutual synonyms
Cite this Source
Valid and Efficacious. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/efficacious/valid
Efficacious & Valid. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/efficacious/valid>.
Valid or Efficacious. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/efficacious/valid.
Google Ngram Viewer shows how "efficacious" and "valid" have occurred on timeline