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Synonyms

inefficacy

American  
[in-ef-i-kuh-see] / ɪnˈɛf ɪ kə si /

noun

  1. lack of power or capacity to produce the desired effect.


Etymology

Origin of inefficacy

From the Late Latin word inefficācia, dating back to 1605–15. See in- 3, efficacy

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.

See Examples For:

The process is often triggered by post-approval studies showing inefficacy, according to Harvard Law professor I. Glenn Cohen.

From Reuters ● Mar. 23, 2023

He seemed to think he could figure this out, make the kind of adjustment he has made so many times before in a career defined by his ability to stave off long stretches of inefficacy.

From Washington Post ● Oct. 7, 2022

As Luther’s claims about the inefficacy of indulgences spread, with help from the new Gutenberg printing press, so did the idea of the solas, which formed the basis of the Reformation.

From The New Yorker ● Aug. 5, 2019

He also became convinced of the inefficacy of Congressional oversight of the agency.

From New York Times ● Feb. 4, 2014

The prince, whose humanity would not suffer him to insult misery with reproof, went away convinced of the emptiness of rhetorical sound, and the inefficacy of polished periods and studied sentences.

From Shorter Novels, Eighteenth Century The History of Rasselas, Prince of Abyssinia; The Castle of Otranto, a Gothic Story; Vathek, an Arabian Tale by William Beckford

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