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Showing results for inefficacious. Search instead for Inefficaciousness.
Synonyms

inefficacious

American  
[in-ef-i-key-shuhs] / ˌɪn ɛf ɪˈkeɪ ʃəs /

adjective

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


inefficacious British  
/ 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

Other Word Forms

  • inefficaciously adverb
  • inefficaciousness noun
  • inefficacity noun
  • inefficacy noun

Etymology

Origin of inefficacious

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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Most nostrums hit at only one of the causes and so are frequently inefficacious.

From Time Magazine Archive

Remedies for the starling plague were suggested, some facetious, some earnest, all equally inefficacious.

From Time Magazine Archive

A few Spotswoods, scattered here and there in the seats of the mighty of our modern America, might not prove inefficacious.

From Legends of Loudoun An account of the history and homes of a border county of Virginia's Northern Neck by Williams, Harrison

Punishment, being primarily mischievous, is out of place when groundless, inefficacious, unprofitable, or needless.

From The World's Greatest Books — Volume 14 — Philosophy and Economics by Hammerton, John Alexander, Sir

It is my belief, however, that, had I attempted a different order of composition, my faculties would not have been found so pointless and inefficacious.

From The Scarlet Letter by Foote, Mary Hallock