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unsustainable

[uhn-suh-stey-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.

Premier League referees cannot weigh in with a raft of penalties in the first few weeks of the season as that would be unsustainable.

From BBC • Jul. 8, 2026

In each case, a low price-to-earnings ratio disguised an unsustainable uptick in profits.

From MarketWatch • Jul. 6, 2026

There are also complaints about the slowness of some tram routes and concerns that the £2 cap on bus fares is financially unsustainable.

From BBC • Jul. 5, 2026

After decades of eating too much unhealthy food, the average middle-aged American is living with multiple chronic conditions and paying unsustainable healthcare costs to receive sick care.

From The Wall Street Journal • Jun. 26, 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



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