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 next engineering challenge will be turning the laboratory demonstration into an efficient quantum interface.

— Aamir Khollam, Interesting Engineering, 18 Sep. 2026
What’s the most efficient way to squeeze the maximum number of quarters into the space?

— Jack Murtagh, Scientific American, 17 Sep. 2026

Definition of efficient

Adjective

The federal watchdog found that detainees were sometimes confined in small metal cages and lacked adequate living space and access to water.

— Miami Herald, Miami Herald, 20 Sep. 2026
The collapse last week wasn’t the first involving unsafe dwellings in the Gaza Strip, but the high death toll underscored the dangers in a territory where the vast majority of the population lacks adequate shelter.

— Wafaa Shurafa, Los Angeles Times, 20 Sep. 2026

Definition of adequate

Adjective

That meant there was no single office, agency or organization capable of addressing residents’ concerns, but a patchwork of agencies where responsibility is fragmented.

— Julia Vargas Jones, CNN Money, 20 Sep. 2026
According to Tianmushan Laboratory, future versions will require a variable-cycle propulsion system capable of supporting both supersonic and subsonic flight efficiently.

— Bojan Stojkovski, Interesting Engineering, 20 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

All three have the advantage of leveraging their strong ties with both Iran and the US to serve as more effective mediators.

— Lauren Morganbesser, semafor.com, 22 Sep. 2026
Even the World Organization for Animal Health, whose guidelines the CFIA follows, is reconsidering how effective culls are in halting bird-flu outbreaks in a world where the next wild duck to land at a farm could trigger another one.

— J. B. MacKinnon, Harpers Magazine, 22 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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“Ultraefficient.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultraefficient. Accessed 23 Sep. 2026.

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Synonyms of ultraefficient

adjective

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