Definition of efficacious
: having the power to produce a desired effect an efficacious remedy
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Examples of efficacious in a sentence
taking a cookie break while studying is one of the most efficacious ways of rejuvenating the mind that I have ever discovered
Origin and Etymology of efficacious
Latin efficac-, efficax, from efficere
First Known Use: 1528
Synonym Discussion of efficacious
EFFICACIOUS Defined for English Language Learners
Definition of efficacious for English Language Learners
: having the power to produce a desired result or effect
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