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Definitions

sustainable

[suh-stey-nuh-buhl] / səˈsteɪ nə bəl /
ADJECTIVE
tenable
Synonyms
STRONGEST
continual continuous viable
STRONG
feasible unceasing
WEAK
green imperishable livable renewable supportable unending worthwhile
Antonyms
STRONGEST
untenable
STRONG
tiring unendurable unsuitable
WEAK
brief fleeting temporary wasteful

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 these trends persist, they are unlikely to be sustainable.

From MarketWatch • Apr. 8, 2026

But Walsh expressed disappointment at the behaviour of sustainable fuel suppliers.

From BBC • Apr. 8, 2026

The data was stronger than forecast, "but vastly overstates the sustainable pace of job growth," said Oxford Economics lead US economist Nancy Vanden Houten.

From Barron's • Apr. 3, 2026

Reducing travel time would make the mission more practical and more sustainable.

From Science Daily • Apr. 3, 2026

These experiences are not part of a sustainable lifestyle, even a lifestyle of chronic deprivation and relentless low-level punishment.

From "Nickel and Dimed: On (Not) Getting By in America" by Barbara Ehrenreich