as in unsupportable
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Recent Examples of unsustainable
However, as a long-term strategy for life, grit is unsustainable.
—
Dimity McDowell, Time, 24 Feb. 2026
The president should also try attacking spending which has created an unsustainable $38 trillion debt.
—Cal Thomas, Arkansas Online, 24 Feb. 2026
Tariff costs are becoming unsustainable for automakers, the president of one of the largest public dealership groups said last week.
—Robert Ferris, CNBC, 24 Feb. 2026
Unfortunately, the repeal of federal tax credits for solar installations made continuing the business unsustainable.
—Mahsa Saeidi, CBS News, 23 Feb. 2026
See All Example Sentences for unsustainable
Dimity McDowell, Time, 24 Feb. 2026
The president should also try attacking spending which has created an unsustainable $38 trillion debt.
—Cal Thomas, Arkansas Online, 24 Feb. 2026
Tariff costs are becoming unsustainable for automakers, the president of one of the largest public dealership groups said last week.
—Robert Ferris, CNBC, 24 Feb. 2026
Unfortunately, the repeal of federal tax credits for solar installations made continuing the business unsustainable.
—Mahsa Saeidi, CBS News, 23 Feb. 2026
See All Example Sentences for unsustainable
Recent Examples of Synonyms for unsustainable
Adjective
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The venerable but troubled outlet has been for sale since its previous owners ran up unsupportable debts and were removed in 2023.—
Tom Chivers,
semafor.com,
24 Nov. 2025
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Remote work, low rates, and investor FOMO drove prices to unsupportable highs.—
Suzanne Blake,
MSNBC Newsweek,
31 July 2025
Adjective
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Agents marked most of the accusations as unverifiable or not credible.—
Stephen Fowler,
NPR,
24 Feb. 2026
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Without independent benchmarks, summit claims remain unverifiable.—
Janakiram MSV,
Forbes.com,
24 Feb. 2026
Adjective
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Researchers already had reason to believe that the pigeonhole principle can’t be proved from the axioms of PV1 alone, so Li, Chen and Oliveira’s results imply that their other equivalent theorems are also likely unprovable in PV1.—
Ben Brubaker,
Quanta Magazine,
1 Dec. 2025
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Given that many of Epstein’s correspondents are redacted and that threads start and stop randomly, many of the emails are perfect building blocks for constructing plausible but ultimately unprovable narratives.—
Charlie Warzel,
The Atlantic,
14 Nov. 2025
Cite this Entry
“Unsustainable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unsustainable. Accessed 10 Mar. 2026.
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