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unsustainable

[uhn-suh-stay-nuh-buhl] / ˌʌn səˈsteɪ nə bəl /
ADJECTIVE
not able to be supported in the future
Synonyms
Antonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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After experiencing a sustained selloff in previous weeks over concerns of overspending and unsustainable debt levels, tech stocks moved higher on Tuesday as investors regained some confidence in the sustainability of AI spending.

From MarketWatch ● Oct. 27, 2026

Seafood has been slower to face such scrutiny, though, as the world leans further into aquaculture, that may change, she said, particularly if more governments begin restricting imports tied to illegality or unsustainable practices.

From Los Angeles Times ● Oct. 9, 2026

Tinubu has said the reforms averted an even greater crisis as the subsidy grew fiscally unsustainable.

From Barron's ● Oct. 8, 2026

Still, the market’s hesitation to price in oversupply seems justifiable, as it likely considers the current upswing in Middle East exports to be unsustainable, he says.

From The Wall Street Journal ● Oct. 6, 2026

Thus language-games do not simply succeed, progress, pay, or prove their worth; they can also become unsustainable if the facts change.

From "The Invention of Science" by David Wootton


Vocabulary lists containing unsustainable

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