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
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Krispy Kreme and McDonald’s also jointly ended their partnership in July 2025 after finding the venture financially unsustainable, leading to over $50 million in charges for the doughnut company.
—
Charlotte Observer, 26 Mar. 2026
The House of Representatives voted to approve a four-year contract granting annual raises of up to 5% to 3,661 state employees, setting aside Republican complaints of unsustainable growth in wages and benefits.
—Mark Pazniokas, Hartford Courant, 26 Mar. 2026
That kind of move was clearly unsustainable.
—Frank Cappelleri, CNBC, 25 Mar. 2026
This is an unsustainable situation; outages leave manatees vulnerable, and in the future, most power plants plan to transition their technology to methods that no longer discharge warm water.
—Elizabeth Neville, The Orlando Sentinel, 22 Mar. 2026
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Charlotte Observer, 26 Mar. 2026
The House of Representatives voted to approve a four-year contract granting annual raises of up to 5% to 3,661 state employees, setting aside Republican complaints of unsustainable growth in wages and benefits.
—Mark Pazniokas, Hartford Courant, 26 Mar. 2026
That kind of move was clearly unsustainable.
—Frank Cappelleri, CNBC, 25 Mar. 2026
This is an unsustainable situation; outages leave manatees vulnerable, and in the future, most power plants plan to transition their technology to methods that no longer discharge warm water.
—Elizabeth Neville, The Orlando Sentinel, 22 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 29 Mar. 2026.
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