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
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The pressing problems of climate change, democratic backsliding, economic inequality, and unsustainable levels of sovereign debt will not be solved by strengthening U.S. power to the detriment of the broader world. Michael Brenes, Foreign Affairs, 28 Jan. 2025 Tourists have always gotten a bad rap, but their impact has grown unsustainable in some destinations. Kathleen Wong, USA TODAY, 26 Jan. 2025 Soon, however, the practice began to look unsustainable. Rachel Treisman, NPR, 24 Jan. 2025 That is because Putin is running unsustainable budget deficits to fund his war machine, totaling in the tens of billions. Jeffrey Sonnenfeld, TIME, 23 Jan. 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

Dictionary Entries Near unsustainable

Cite this Entry

“Unsustainable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unsustainable. Accessed 10 Feb. 2025.

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