HOW TO PRONOUNCE
efficacious
/ˌɛf.əˈkeɪ.ʃəs/
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American Pronunciation Guide · 0:39
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What does efficacious mean?
adjective
- Effective; possessing efficacy.
Definitions regrouped for readability · CC BY-SA 4.0
IPA pronunciation
/ˌɛf.əˈkeɪ.ʃəs/
Wiktionary contributors · CC BY-SA 4.0 ↗Pronunciation varies by speaker and region. About these dictionary pronunciations.
In the pages of books
See this word in context.
Science, after having long groped about, now knows that the most fecundating and the most efficacious of fertilizers is human manure.
It has since been discovered that when justice is more certain and more mild, it is at the same time more efficacious.
More book examples (2)
This is unquestionably the simplest and most efficacious means of subsisting troops, and it has been the basis of all modern wars.
These words were said to be singularly efficacious in preventing madness in dogs, but for my part I do not credit it.