Efficacious
Efficacious adjective - Producing or capable of producing an intended result or having a striking effect.
Usage example: an efficacious law
Powerful is a synonym for efficacious in property topic. In some cases you can use "Powerful" instead an adjective "Efficacious", when it comes to topics like effective, efficient.
Mutual synonyms
Related pairs
- forceful and efficacious
- forceful and powerful
- effective and efficacious
- effective and powerful
- strong and efficacious
- strong and powerful
- authoritative and efficacious
- authoritative and powerful
- convincing and efficacious
- convincing and powerful
- potent and efficacious
- potent and powerful
- effectual and efficacious
- effectual and powerful
Both words in one sentence
- Even powerful spells may be invoked in this way, if the magic is efficient as well as efficacious.
Source: Cast from Experience Points
Cite this Source
Powerful and Efficacious. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/efficacious/powerful
Efficacious & Powerful. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/efficacious/powerful>.
Powerful or Efficacious. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/efficacious/powerful.
Google Ngram Viewer shows how "efficacious" and "powerful" have occurred on timeline