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View synonyms for

efficacious

[ ef-i-key-shuhs ]

adjective

  1. capable of having the desired result or effect; effective as a means, measure, remedy, etc.:

    The medicine is efficacious in stopping a cough.



efficacious

/ ˌɛɪˈɪʃə /

adjective

  1. capable of or successful in producing an intended result; effective as a means, remedy, etc
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Derived Forms

  • ˌڴھˈdzܲԱ, noun
  • ˌڴھˈdzܲ, adverb
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Other yvlog Forms

  • Э·cdzܲ· adverb
  • Э·cdzܲ·Ա noun
  • ԴDze·ھ·cdzܲ adjective
  • ԴDze·ھ·cdzܲ·ly adverb
  • ܲe·ھ·cdzܲ adjective
  • ܲe·ھ·cdzܲ·ly adverb
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yvlog History and Origins

Origin of efficacious1

First recorded in 1520–30; from Latin ڴھ峦- (stem of efficax ) “effectual.” See efficient, -acious
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yvlog History and Origins

Origin of efficacious1

C16: from Latin ڴھ powerful, efficient, from efficere to achieve; see effect
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Example Sentences

Examples have not been reviewed.

“The beauty of it is it’s gentle but also highly efficacious.”

From

In a paper published in Molecular Psychiatry, researchers outline a new framework for understanding how antidepressants are efficacious in treating MDD.

From

“If something was to be made available and shown to be efficacious and safe, I think there would be wide use of it,” Jonker says.

From

The low dose was a little more than 65% efficacious in both cases.

From

The authors note that gadolinium has not been tested in humans and has not been deemed to be safe or efficacious.

From

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When To Use

What are other ways to say efficacious?

The adjective efficacious describes things that are capable of having the desired result or effect. But efficacious isn’t quite the same as effectual, effective, or efficient! Find out why on .

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