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
Useful is a synonym for efficacious in effective topic. In some cases you can use "Useful" instead an adjective "Efficacious", when it comes to topics like efficient.
Useful
Useful adjective - Providing service or assistance.
Usage example: hopefully, the consultant's financial advice will prove useful in planning for our retirement
Efficacious is a synonym for useful in beneficial topic. You can use "Efficacious" instead an adjective "Useful".
Mutual synonyms
Related pairs
- valuable and efficacious
- valuable and useful
- advantageous and efficacious
- advantageous and useful
- helpful and efficacious
- helpful and useful
- effective and efficacious
- effective and useful
- powerful and efficacious
- powerful and useful
- potent and efficacious
- potent and useful
- profitable and efficacious
- profitable and useful
Cite this Source
Useful and Efficacious. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/efficacious/useful
Efficacious & Useful. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/efficacious/useful>.
Useful or Efficacious. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/efficacious/useful.
Google Ngram Viewer shows how "efficacious" and "useful" have occurred on timeline