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

Synonyms & Similar Words

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Example Sentences

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Recent Examples of efficiency Insulation can improve your home’s energy efficiency and can also help keep pests out. — Dan Simms, USA Today, 11 July 2026 This has proved to improve safety and efficiency where it has been adopted. — Chicago Tribune, 11 July 2026 To keep things running smoothly, the cooling system has been rerouted to the front for better efficiency and cleaner airflow through the rear tunnels. — New Atlas, 11 July 2026 The stakes of getting this right extend well beyond operational efficiency, as 81% of CEOs say their AI decisions are already shaping or securing their long-term legacy. — Forbes.com, 10 July 2026 See All Example Sentences for efficiency

Recent Examples of Synonyms for efficiency

Noun

However, as the industry innovates with newer products such as high alcohol content beer or ready-to-drink cocktails, the efficacy of the categorical system continues to break down.

— Adam Hoffer, Chicago Tribune, 5 July 2026
Program planning needs to take into account the fun factor without losing efficacy.

— Matt Parrott, Arkansas Online, 5 July 2026

Definition of efficacy

Noun

Swimming, sweating and even everyday wear can reduce its effectiveness over time.

— Kaitlyn Harvey, AJC.com, 17 July 2026
The effectiveness of a monitoring system ultimately depends not only on the volume of data collected but also on the credibility, security, and reliability of the information produced.

— IEEE Spectrum, IEEE Spectrum, 16 July 2026