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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.

If it’s uncomfortable or unsustainable to live with continuously, ask your body why — and how it can help you make decisions that are the kindest possible to your nervous system.

From Los Angeles Times • Apr. 10, 2026

Two things may be true: A.I. is putting unsustainable pressure on managers, and an overreliance on A.I. is causing previously standard skills to atrophy.

From Slate • Apr. 9, 2026

When feed costs become unsustainable, farmers may be forced to kill or sell off the breeding cows and sows that represent the future of the food supply.

From Salon • Apr. 8, 2026

While this doesn’t mean dividends are unsustainable, “it nonetheless is suggestive of strains,” the firm added.

From Barron's • Apr. 7, 2026

In any society built on institutionalized racism, race-mixing doesn’t merely challenge the system as unjust, it reveals the system as unsustainable and incoherent.

From "Born a Crime: Stories from a South African Childhood" by Trevor Noah



Vocabulary lists containing unsustainable