ULTRAEFFICIENT Synonyms: 75 Similar and Opposite Words

ultraefficient

adjective

Definition of ultraefficient

as in efficient

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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 ultraefficient These ultraefficient electric vehicles could reduce the need for charging stops for all but the longest road trips. — Zlati Meyer, WSJ, 9 June 2023 Decades of selective breeding for better berries ensued, together with the development of ultraefficient packing methods and mechanical harvesters. — Yasmin Tayag, The Atlantic, 4 Oct. 2022 The developers said the ultraefficient design of those units appeals to a demographic that’s looking to downsize and simplify their life, but who still want to take advantage of all the benefits of living in a thriving, urban environment. — Jim Buchta, Star Tribune, 18 Oct. 2020 Extract frozen gas from permafrost or from the ocean floor to power new, ultraefficient turbines. — Discover Magazine, 16 Feb. 2012

Recent Examples of Synonyms for ultraefficient

Adjective

Electricity made every existing process a little more efficient, one machine at a time.

— Stephen Messer, Fortune, 23 Oct. 2026
The service Sprightly staff members are friendly, trilingual, and super-efficient, delivering six-course meals with impressive promptness.

— Condé Nast, Condé Nast Traveler, 22 Oct. 2026

Definition of efficient

Adjective

County officials responsible for issuing building permits have been accused of failing to conduct adequate inspections to ensure developers comply with safety guidelines and construction standards.

— Arkansas Online, Arkansas Online, 24 Oct. 2026
Sorrells has been unwilling to seek adequate budget funding from the Commissioners Court, leaving the office understaffed, according to one of the sources.

— Fort Worth Star-Telegram, Fort Worth Star-Telegram, 24 Oct. 2026

Definition of adequate

Adjective

Admirers viewed him as a capable leader who could steer the nation through global uncertainties, the image carefully crafted by the mainstream media.

— JOVANA GEC, Arkansas Online, 26 Oct. 2026
Nevertheless, the initial attempt marked the beginning of a longer effort to develop a motorcycle configuration capable of traveling across water.

— Jijo Malayil, Interesting Engineering, 26 Oct. 2026

Definition of capable

Adjective

The Ordinary Niacinamide 10% + Zinc 1% Affordable and efficacious, this serum played a key role in fueling The Ordinary’s meteoric rise through the ranks of skin care.

— Noor Lobad, Footwear News, 12 Oct. 2026
Despite their reputation as one of the most efficacious skin-care ingredients on the market, retinoids are not without caveats.

— Rio Viera-Newton, Vogue, 23 July 2026

Definition of efficacious

Adjective

Post-operative test results to confirm whether the pope is completely cancer-free and what, if any, treatment is needed have not been released yet.

— Barbie Latza Nadeau, CNN Money, 16 Oct. 2026
The Vatican says post-operative blood tests and a chest X-ray show no immediate complications.

— Stephanie Stahl, CBS News, 14 Oct. 2026

Definition of operative

Adjective

Forty-three percent of US adults say the federal government is effective at bettering people’s lives, down from 51% in 2025, according to a new Bentley University-Gallup survey.

— Morgan Chalfant, semafor.com, 21 Oct. 2026
Their usefulness will depend on reliable navigation, robust fault responses and effective coordination between onboard systems.

— Aamir Khollam, Interesting Engineering, 20 Oct. 2026

Definition of effective

Adjective

Others argue even if wilderness therapy is effectual for some, its premise is flawed.

— Sara M Moniuszko, USA TODAY, 20 Feb. 2024
Will prospective politicos and those holding positions of power prompt effectual projects to maintain upkeep and ensure each and every citizen is safe rather than pushing self-serving, divisive social agendas?

— Voice of the People, New York Daily News, 16 Jan. 2024

Definition of effectual

Browse Nearby Words

ultradry

ultraefficient

ultraexpensive

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“Ultraefficient.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultraefficient. Accessed 27 Oct. 2026.

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Synonyms of ultraefficient

adjective

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