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

More efficient micro-LED transmitters could eventually help data centers increase communication speeds without relying exclusively on power-hungry lasers.

— Aamir Khollam, Interesting Engineering, 30 Oct. 2026
Both Young and Packers quarterback Jordan Love attempted 41 passes, but Jordan Love was more efficient, completing 30 passes for 288 yards and three touchdowns.

— Charlotte Observer, Charlotte Observer, 30 Oct. 2026

Definition of efficient

Adjective

The foods for customer grab-and-go do not contain adequate labeling information.

— Arkansas Online, Arkansas Online, 2 Nov. 2026
Abbott bused migrants from the border to Chicago, often without a clear destination or adequate clothing for harsh Illinois winters.

— Daniel C. Vock, Chicago Tribune, 1 Nov. 2026

Definition of adequate

Adjective

Harop-like kamikaze suicide drones capable of precision military strikes could soon become one of North Korea’s latest additions to its growing arsenal of advanced unmanned weapons, underscoring the apparent expansion of its strike capabilities.

— Muskan Bhatia, Interesting Engineering, 1 Nov. 2026
As a consequence, in this biennial, there is pedagogy, good intentions, and goodwill, but no framework capable of conveying what must remain outside of language—despite the architecture of the venues being made for exactly that.

— Kristian Vistrup Madsen, Artforum, 1 Nov. 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

When Wilson sent me her timeline, her request for the operative actions of the city (resolutions and ordinances) was nearly four weeks old.

— Arkansas Online, Arkansas Online, 30 Oct. 2026
The operative issue is whether the complication was caused by substandard care.

— Michael McCann, Sportico.com, 26 Oct. 2026

Definition of operative

Adjective

Fraga added that her administration remains focused on fiscal responsibility, public safety, economic development and delivering effective, accountable government.

— Verónica Egui Brito, Miami Herald, 4 Nov. 2026
Luna pitched himself to county voters as a calmly effective operator who has brought down crime while building relationships with local, state and federal leaders that suffered under his predecessor’s tenure.

— Itzel Luna, Los Angeles Times, 4 Nov. 2026

Definition of effective

Adjective

If we were left solely to the wordy wit of legislators in Congress for our guidance, uncorrected by the seasonable experience and the effectual complaints of the people, America would not long retain her rank among the nations.

— René Ostberg, Encyclopedia Britannica, 30 Oct. 2026
Others argue even if wilderness therapy is effectual for some, its premise is flawed.

— Sara M Moniuszko, USA TODAY, 20 Feb. 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 4 Nov. 2026.

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Synonyms of ultraefficient

adjective

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