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Definitions

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.

Amanda says growing fears about safety make life in the UK feel increasingly unsustainable for Jewish people.

From BBC • Apr. 20, 2026

They’ll say that farming is unsustainable in the San Joaquin Valley, a region of incomparable fertility that produces more than half of California’s agricultural output.

From The Wall Street Journal • Apr. 17, 2026

Maintaining incentives like 6% APY can be difficult and may even be unsustainable over time, Xiang Zheng, an assistant professor of finance at the University of Connecticut, recently told MarketWatch.

From MarketWatch • Apr. 16, 2026

Spanish Prime Minister Pedro Sanchez called China's trade imbalance with the European Union "unsustainable" on Monday, as he began a three-day visit to Beijing where he hopes to strengthen economic ties.

From Barron's • Apr. 12, 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