inefficacy

American  

[in-ef-i-kuh-see] / ɪnˈɛf ɪ kə si /

noun

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

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Etymology

Origin of inefficacy

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

Example Sentences

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

Phil Jackson took over the team the next year, ushering in a new period of inefficacy for the team.

From New York Times • Oct. 20, 2021

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

"You forget, father," said Mildred, conscious of the inefficacy of any other appeal, "that Mr. Thomas has promised to pay the legacies that Sir Wycherly intended to leave."

From The Two Admirals by Cooper, James Fenimore