unsustainable
adjective
un·sus·tain·able
ˌən-sə-ˈstā-nə-bəl 
: not capable of being prolonged or continued : not sustainable
unsustainable agricultural practices
unsustainable growth
Examples of unsustainable in a Sentence
Recent Examples on the Web
The worst asset was gold, which lost 15% of its value after an unsustainable run-up.
—
Jim Edwards, Fortune, 31 Mar. 2026
But relying on migration as a buffer against an aging population is likely unsustainable.
—Jordan Smith, IndyStar, 31 Mar. 2026
Houston won the game, 9-7, but in a fashion that is unsustainable across the next five months.
—Chandler Rome, New York Times, 30 Mar. 2026
This could be putting unsustainable levels of consumption on stockpiles, officials have explained to the press.
—Christopher McFadden, Interesting Engineering, 28 Mar. 2026
See All Example Sentences for unsustainable
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Jim Edwards, Fortune, 31 Mar. 2026
But relying on migration as a buffer against an aging population is likely unsustainable.
—Jordan Smith, IndyStar, 31 Mar. 2026
Houston won the game, 9-7, but in a fashion that is unsustainable across the next five months.
—Chandler Rome, New York Times, 30 Mar. 2026
This could be putting unsustainable levels of consumption on stockpiles, officials have explained to the press.
—Christopher McFadden, Interesting Engineering, 28 Mar. 2026
See All Example Sentences for unsustainable
Cite this Entry
“Unsustainable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unsustainable. Accessed 4 Apr. 2026.
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