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 The drone systems include hardware and software designed for safety and efficiency. — Staff Report, Hartford Courant, 19 Sep. 2026 Dart’s chemistry with Likely showed up most often in Week 1 on money downs and was a huge reason for the Giants’ 9-of-11 third down efficiency, which was actually 9-for-10 before an end-of-game kneel down. — Pat Leonard, New York Daily News, 19 Sep. 2026 Yet after this rapid expansion, any potential slowdown in AI demand growth, or efficiency gains that reduce data center power requirements, could introduce significant instability into power grid operations. — CNBC, 18 Sep. 2026 New tools continue to enter the market, and each promises to improve productivity, increase efficiency or transform how work gets done. — Kevan Savage, Forbes.com, 18 Sep. 2026 See All Example Sentences for efficiency

Recent Examples of Synonyms for efficiency

Noun

The Pentagon has rolled out formal guidance for mandatory testosterone testing for male service members 30 and older, a policy that leaves out women for now and faces questions from medical experts about the need and efficacy of such a program.

— ABC News, ABC News, 18 Sep. 2026
This construct measures four developable capacities—hope, efficacy, resilience and optimism, collectively known as HERO.

— Expert Panel®, Forbes.com, 18 Sep. 2026

Definition of efficacy

Noun

In testing the holiday period’s effectiveness, the report also verifies that spending at peak periods of demand does not guarantee the highest marginal return on media spend (MROM).

— Arthur Zaczkiewicz, Footwear News, 24 Sep. 2026
This inevitably creates inequities across student access, workforce preparation, cybersecurity and institutional effectiveness.

— Tarini Mehta, Sacbee.com, 24 Sep. 2026