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

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of efficiency But providers may have a limited window to benefit from those efficiencies before reimbursement catches up. — Bill Miller, Fortune, 10 Oct. 2026 The system still needs improvements in the accuracy of the device, photon-generation efficiency, and detector performance. — Rupendra Brahambhatt, Interesting Engineering, 10 Oct. 2026 Even among Big 12 quarterbacks, Craig’s efficiency numbers lag behind players like Arizona’s Noah Fifita and Oklahoma State’s Drew Mestemaker. — Steven Johnson, Fort Worth Star-Telegram, 9 Oct. 2026 The fourth-quarter efficiency of the Dallas offense is among the best in the NFL, bolstered by a 99-yard drive when the deficit was two touchdowns against Tampa Bay. — ABC News, 9 Oct. 2026 See All Example Sentences for efficiency

Recent Examples of Synonyms for efficiency

Noun

Bloomberg reports that insiders say Gemini 4 has solid model efficacy, but isn’t as stellar when employees actually use it, and that the model has issues with some coding tasks.

— John Kell, Fortune, 7 Oct. 2026
Why the burning sensation is not a benefit That sharp alcohol sting many of us learned to equate with efficacy is doing no useful work.

— Hanna Wickes, Sacbee.com, 5 Oct. 2026

Definition of efficacy

Noun

The agency has repeatedly reaffirmed the pill’s safety and effectiveness over the years, in addition to easing a number of restrictions on the drug, including dropping a requirement that it be dispensed in person.

— CNN Money, CNN Money, 8 Oct. 2026
The agency has repeatedly reaffirmed the pill's safety and effectiveness over the years, in addition to easing a number of restrictions on the drug, including dropping a requirement that it be dispensed in person.

— CBS News, CBS News, 8 Oct. 2026