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
Recent Examples on the Web
Such ideological exuberance was obviously unsustainable, which was Davis’s main point.
—
Literary Hub, 28 Oct. 2025
Meanwhile, climate change, as well as unsustainable coastal and marine development, has affected and, at times, destroyed green turtle habitats.
—Becca Longmire, PEOPLE, 27 Oct. 2025
In late May, the majority of bar advocates — private attorneys contracted by the state to represent criminal defendants — at the district court level in Middlesex and Suffolk counties instituted a work stoppage citing low pay and unsustainable work loads.
—Grace Zokovitch, Boston Herald, 23 Oct. 2025
In the world of The Boys, and what’s going on with Homelander [Antony Starr], everything that Homelander is doing is unsustainable.
—Abbey White, HollywoodReporter, 22 Oct. 2025
See All Example Sentences for unsustainable
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Literary Hub, 28 Oct. 2025
Meanwhile, climate change, as well as unsustainable coastal and marine development, has affected and, at times, destroyed green turtle habitats.
—Becca Longmire, PEOPLE, 27 Oct. 2025
In late May, the majority of bar advocates — private attorneys contracted by the state to represent criminal defendants — at the district court level in Middlesex and Suffolk counties instituted a work stoppage citing low pay and unsustainable work loads.
—Grace Zokovitch, Boston Herald, 23 Oct. 2025
In the world of The Boys, and what’s going on with Homelander [Antony Starr], everything that Homelander is doing is unsustainable.
—Abbey White, HollywoodReporter, 22 Oct. 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 29 Oct. 2025.
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