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
Iran has already experimented with piping water between basins, and those transfers have in many cases fueled unsustainable growth rather than real conservation, worsening water problems both in the donor and recipient basins.
—
Ali Mirchi, The Conversation, 1 Dec. 2025
Vicious competition among desperate automakers has depressed car prices to nearly unsustainable levels.
—Michael Schuman, The Atlantic, 1 Dec. 2025
According to the researchers, these practices are unsustainable, especially given the rise in private space launches.
—Chris Young, Interesting Engineering, 1 Dec. 2025
As of June, about 70% of hospitals in Colorado had an unsustainable operating margin, which the association defines as below 4%, Colorado Hospital Association spokesman Dan Mager said.
—Meg Wingerter, Denver Post, 29 Nov. 2025
See All Example Sentences for unsustainable
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.
Ali Mirchi, The Conversation, 1 Dec. 2025
Vicious competition among desperate automakers has depressed car prices to nearly unsustainable levels.
—Michael Schuman, The Atlantic, 1 Dec. 2025
According to the researchers, these practices are unsustainable, especially given the rise in private space launches.
—Chris Young, Interesting Engineering, 1 Dec. 2025
As of June, about 70% of hospitals in Colorado had an unsustainable operating margin, which the association defines as below 4%, Colorado Hospital Association spokesman Dan Mager said.
—Meg Wingerter, Denver Post, 29 Nov. 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 3 Dec. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share