unsustainable

adjective

un·​sus·​tain·​able ˌən-sə-ˈstā-nə-bəl How to pronounce unsustainable (audio)
: not capable of being prolonged or continued : not sustainable
unsustainable agricultural practices
unsustainable growth
unsustainability noun
unsustainably adverb
an unsustainably high rate of growth

Examples of unsustainable in a Sentence

Recent Examples on the Web
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.
Your Treasury Secretary says this situation with China is unsustainable. Time Staff, Time, 25 Apr. 2025 Experts say China is pushing back on the idea of active talks to remove the tariffs because Beijing knows the tariffs are unsustainable from a U.S. perspective. Alex Gangitano, The Hill, 24 Apr. 2025 At the same time, both in the U.S. and globally, fertility rates are trending towards levels that demographers warn may be unsustainable – falling below the replacement rate needed to maintain popularity stability, with long-term implications for economies and social systems. Thomas G. Moukawsher, MSNBC Newsweek, 24 Apr. 2025 The only drawback is that while Raphinha has been outstanding, the Brazilian has been on an unsustainable, white-hot finishing run in Europe this season. Brett Koremenos, New York Times, 23 Apr. 2025 See All Example Sentences for unsustainable

Word History

First Known Use

circa 1677, in the meaning defined above

Time Traveler
The first known use of unsustainable was circa 1677

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Cite this Entry

“Unsustainable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unsustainable. Accessed 1 May. 2025.

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