inefficacy

[ in-ef-i-kuh-see ]

noun

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

Word History and Origins

Origin of inefficacy¹

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

Example Sentences

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

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

From New York Times

To Mr. Will, failure to lower the rate is proof of the inefficacy of Roosevelt’s costly job-creation programs.

From Washington Post

Disillusioned with the inefficacy of the Federal Police, López Obrador as president bet his security strategy on a new force that would draw on the resources of the military, but be civilian in nature.

From Washington Times

In its report, Amnesty said its research “demonstrates NSO Group’s continued failure to conduct adequate human rights due diligence and the inefficacy of its own human rights policy.”

From Washington Post