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View synonyms for

inefficacious

[ in-ef-i-key-shuhs ]

adjective

  1. not able to produce the desired effect; ineffective.


inefficacious

/ ˌɪnɛfɪˈkæsɪtɪ; ˌɪnɛfɪˈkeɪʃəs; ɪnˈɛfɪkəsɪ /

adjective

  1. failing to produce the desired effect
“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

  • ˌԱڴھˈdzܲ, adverb
  • inefficacy, noun
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Other yvlog Forms

  • e·ھ·cdzܲ· adverb
  • e·ھ·cdzܲ·Ա ··ھ···ٲ [in-ef-i-, kas, -i-tee], noun
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yvlog History and Origins

Origin of inefficacious1

First recorded in 1650–60; in- 3 + efficacious
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Example Sentences

Examples have not been reviewed.

I signed because I wanted to see if a new approach might save me from the miseries of standard treatments that had proven inefficacious.

From

Meanwhile, the public has received only dribs and drabs of the investigation’s contents — all of which affirm the appropriately established understanding that the CIA’s post-9/11 use of torture was rampant and inefficacious.

From

The report is an important recognition that this preemptive, prefigurative mode of policing and surveillance is not only unconstitutional, but also practically inefficacious if the aim is preventing terror attacks.

From

The report is an important recognition that preemptive, prefigurative mode of policing and surveillance is not only unconstitutional, but also practically inefficacious if the aim is preventing terror attacks.

From

Every argument was brought forward to induce him to stay in La Rochelle, but every argument proved inefficacious.

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