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.
Retail analyst Neil Saunders said that going into the first bankruptcy, Joann's debt levels were already unsustainable. Scott Neuman, NPR, 13 Feb. 2025 Efforts to fabricate Taiwanese statehood, nationality, or language—instigated from across the ocean—are artificial and, consequently, unsustainable. Thomas G. Moukawsher, Newsweek, 12 Feb. 2025 It’s been a rough skid after a decade of Peak TV spending that was unsustainable in the long run. Cynthia Littleton, Variety, 5 Feb. 2025 Jefferies analyst Brent Thill thinks Palantir’s run is unsustainable, given that the stock is trading at about 50-times forward earnings. Brian Evans, CNBC, 3 Feb. 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 20 Feb. 2025.

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