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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For us, steady progress is key, as rapid spikes often create unsustainable bubbles that eventually burst.
—
Anna Marie De La Fuente, Variety, 31 July 2025
That's not from the Fed necessarily, which has maintained a relatively steady and predictable policy path and allowed its balance sheet to shrink, but from the Federal government, which continues on a fiscally unsustainable path.
—Michael Khouw, CNBC, 31 July 2025
Healthy animals had to be killed because the zoo maintained irresponsible and unsustainable breeding policies for decades.
—Kimberlee Speakman, People.com, 30 July 2025
The rationale was that, if Isak was given a pay rise that Newcastle may have struggled to afford in the short run, other key players may demand similar wage bumps, and that was simply unsustainable.
—George Caulkin, New York Times, 30 July 2025
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Anna Marie De La Fuente, Variety, 31 July 2025
That's not from the Fed necessarily, which has maintained a relatively steady and predictable policy path and allowed its balance sheet to shrink, but from the Federal government, which continues on a fiscally unsustainable path.
—Michael Khouw, CNBC, 31 July 2025
Healthy animals had to be killed because the zoo maintained irresponsible and unsustainable breeding policies for decades.
—Kimberlee Speakman, People.com, 30 July 2025
The rationale was that, if Isak was given a pay rise that Newcastle may have struggled to afford in the short run, other key players may demand similar wage bumps, and that was simply unsustainable.
—George Caulkin, New York Times, 30 July 2025
See All Example Sentences for unsustainable
Cite this Entry
“Unsustainable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unsustainable. Accessed 7 Aug. 2025.
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