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 This reduces unintended air recirculation and overall increases the efficiency of the box. — John Alexander, Popular Science, 1 Nov. 2026 This matters most in high-commitment data center programs, where a delay in a single critical component ripples straight into customer commitments, revenue realization and capital efficiency. — Jayashree Arunkumar, Forbes.com, 30 Oct. 2026 Both the Aspen Vodka production facility and Golden 1 Center are LEED Platinum-certified, indicating a high level of energy efficiency. — Sean Timberlake, Sacbee.com, 30 Oct. 2026 For this moment in time there is Sarah Strong, with her cool, seemingly effortless efficiency masking fire within, and there is Braylon Mullins, that aw-shucks Indianan who turned March Madness upside down with one miraculous shot seven months ago. — Dom Amore, Hartford Courant, 30 Oct. 2026 See All Example Sentences for efficiency

Recent Examples of Synonyms for efficiency

Noun

Marlow’s testimony also challenged the efficacy of Flock cameras and argued that the only situations that they have been studied and found to deter crime is in relation to car thefts and property crimes.

— Graham Hurley, CNN Money, 1 Nov. 2026
The committee noted conflicting evidence on the drug’s efficacy and clear safety risks, including brain bleeds, in large numbers of patients.

— C. Joseph Ross Daval, STAT, 30 Oct. 2026

Definition of efficacy

Noun

Its effectiveness will depend on how federal agencies identify emerging threats and respond to companies or individuals that cross legal boundaries.

— Aamir Khollam, Interesting Engineering, 6 Nov. 2026
Defense Secretary Pete Hegseth has repeatedly questioned whether women should serve in ground combat and special operations roles, arguing that their inclusion could undermine military effectiveness and physical standards.

— James LaPorta, CBS News, 5 Nov. 2026