Certain
Certain adjective - Known but not named.
Efficacious and certain are semantically related. in reliable topic. In some cases you can use "Efficacious" instead an adjective "Certain".
Efficacious
Efficacious adjective - Producing or capable of producing a desired result.
Certain and efficacious are semantically related. Sometimes you can use "Certain" instead an adjective "Efficacious".
Mutual synonyms
Related pairs
- sound and certain
- sound and efficacious
- positive and certain
- positive and efficacious
- true and certain
- true and efficacious
- reliable and certain
- reliable and efficacious
- trustworthy and certain
- trustworthy and efficacious
- unfailing and certain
- unfailing and efficacious
- conclusive and certain
- conclusive and efficacious
Both words in one sentence
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From the audience' perspective it appears to be similar to Greek Fire, which in Real Life is not, of course, magical, but the pyromancers report that "certain spells" have become "more efficacious" after The Magic Comes Back, so its creation is apparently magical in-universe.
Source: Military Mage
Cite this Source
Efficacious and Certain. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/certain/efficacious
Certain & Efficacious. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/certain/efficacious>.
Efficacious or Certain. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/certain/efficacious.
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