HOW TO PRONOUNCE
efficacy
/ˈɛfɪˌkæsi/
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American Pronunciation Guide · 1:05
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Put the primary stress on “ef.”
Keep the first syllable strongest, and give the c in the final cy the s sound of see.
4 syllables · Stress on syllable 1
TRY SAYING
“The report discusses the efficacy of the program.”
APG practice sentence · CC BY-SA 4.0
CMU Pronouncing Dictionary ↗What does efficacy mean?
noun
- The ability to produce a desired effect under ideal testing conditions.
- A degree of ability to produce a desired effect; effectiveness.
Definitions regrouped for readability · CC BY-SA 4.0
IPA pronunciation
/ˈɛfɪˌkæsi/
Pronunciation used in the listening tip.
CMU Pronouncing Dictionary ↗Pronunciation varies by speaker and region. About these dictionary pronunciations.
In the pages of books
See this word in context.
But there are certain other considerations which should have weight when we contemplate this life and its efficacy as an example.
It might even be said that sports of this kind are apprehended to have some efficacy as a means of grace.
More book examples (2)
The efficacy of various principles is now well understood, which were either not known at all, or imperfectly known to the ancients.
These circumstances, as they are altogether independent of domestic industry, so they necessarily render the efficacy of its efforts more or less uncertain.