EFFICIENCY Synonyms: 22 Similar and Opposite Words

efficiency

noun

i-ˈfi-shən-sē

Definition of efficiency

as in efficacy

the power to produce a desired result the proven efficiency of meditation in reducing stress within the company's workforce

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Example Sentences

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Recent Examples of efficiency Such robotic efficiency can reduce welding costs by 85 percent, according to Path Robotics. — Jeremy Hsu, ArsTechnica, 17 Aug. 2026 Stella Juva takes that same pursuit of efficiency and puts medical care at the center of the mission. — Kurt Knutsson, FOXNews.com, 16 Aug. 2026 Scheduling efficiency Campaigns struggle to balance many demands such as meeting voters in person, raising money and the logistics of travel. — Mike Catalini, Los Angeles Times, 15 Aug. 2026 More scheduling efficiency for candidates Campaigns struggle to balance many demands such as meeting voters in person, raising money, and the logistics of travel. — Mike Catalini, Christian Science Monitor, 15 Aug. 2026 See All Example Sentences for efficiency

Recent Examples of Synonyms for efficiency

Noun

Johnson, chairman of the subcommittee on investigations, had sought to open a parallel avenue of congressional investigation about Fauci's role in responding to the COVID-19 pandemic, including the safety and efficacy of the COVID-19 vaccines.

— ABC News, ABC News, 14 Aug. 2026
However, Schneider is skeptical about the efficacy of flour as a pest repellent.

— Ashley Chalmers, The Spruce, 14 Aug. 2026

Definition of efficacy

Noun

How closely matched the flu vaccine is to the dominant strain of the season is part of what accounts for the year-to-year changes in the shot’s effectiveness.

— Elise Haulund, CNN Money, 14 Aug. 2026
Because supplements don't have to undergo FDA approval for safety or effectiveness before being sold, Wood also recommends looking for products independently tested by a reputable third party.

— Dr. Onaola Adedeji, ABC News, 13 Aug. 2026