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

The service Warm and efficient, offering to show you around the historic corners of the hotel, remembering coffee orders at breakfast, and recommending dishes on the menu as if cooking supper in their own home.

— Condé Nast, Condé Nast Traveler, 3 Sep. 2026
Researchers at Stanford Engineering have developed a new, highly efficient method for producing hydrogen using methane pyrolysis.

— Mrigakshi Dixit, Interesting Engineering, 3 Sep. 2026

Definition of efficient

Adjective

Lyft also doesn’t fingerprint its drivers unless required by law and doesn’t provide adequate background checks, the lawsuit alleged.

— Idaho Statesman, Idaho Statesman, 5 Sep. 2026
The state health department said North Carolina has an adequate supply of prophylaxis and would provide it to anyone who needs it.

— Jen Christensen, CNN Money, 4 Sep. 2026

Definition of adequate

Adjective

The two components will work together as an all-up-round, or AUR, test bed capable of supporting hypersonic flight testing.

— Bojan Stojkovski, Interesting Engineering, 6 Sep. 2026
Remember that your shotgun cannot be capable of holding more than two cartridges in the magazine, and three total.

— Bryan Hendricks, Arkansas Online, 6 Sep. 2026

Definition of capable

Adjective

Also, at least one Dolls doctor, the administrative complaint said, skipped steps in pre-operative risk evaluation of anesthesia and the surgery to be performed or at least failed to document taking each of those steps.

— David J. Neal, Miami Herald, 24 Aug. 2026
Kiara suddenly has the ability to jump out of cable cars and scale buildings with a CIA-operative level of precision.

— CT Jones, Rolling Stone, 21 Aug. 2026

Definition of operative

Adjective

Spurs were also incredibly effective at keeping sides out from them, finishing second to Arsenal in set-piece goals conceded (nine).

— Elias Burke, New York Times, 9 Sep. 2026
Its physical design is paired with substantial onboard computing, with three Turing AI chips providing up to 2,250 TOPS of effective computing power.

— Jijo Malayil, Interesting Engineering, 8 Sep. 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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Style

“Ultraefficient.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultraefficient. Accessed 9 Sep. 2026.

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Synonyms of ultraefficient

adjective

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