Efficacious
Efficacious adjective - Producing or capable of producing a desired result.
Perfect and efficacious are semantically related. In some cases you can use "Perfect" instead an adjective "Efficacious".
Perfect
Perfect adjective - Being entirely without fault or flaw.
Efficacious and perfect are semantically related. Sometimes you can use "Efficacious" instead an adjective "Perfect".
Cite this Source
Perfect and Efficacious. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/efficacious/perfect
Efficacious & Perfect. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/efficacious/perfect>.
Perfect or Efficacious. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/efficacious/perfect.
Google Ngram Viewer shows how "efficacious" and "perfect" have occurred on timeline