Autonomous
Autonomous adjective - Not being under the rule or control of another.
Efficacious and autonomous are semantically related. In some cases you can use "Efficacious" instead an adjective "Autonomous".
Efficacious
Efficacious adjective - Producing or capable of producing a desired result.
Autonomous and efficacious are semantically related. Sometimes you can use "Autonomous" instead an adjective "Efficacious".
Mutual synonyms
Cite this Source
Efficacious and Autonomous. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/autonomous/efficacious
Autonomous & Efficacious. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/autonomous/efficacious>.
Efficacious or Autonomous. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/autonomous/efficacious.
Google Ngram Viewer shows how "autonomous" and "efficacious" have occurred on timeline