Find Antonyms

sustainable Antonyms

Opposite of sustainable

Because the opposite of sustainable shifts with each meaning, the 11 antonyms and opposite words below are separated across 3 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Able to be maintained or continued at a certain rate or level over the long term without exhausting resources.

Usage Example

"The company is working to build a unsustainable business model that does not rely on short-term subsidies."

Strongest
unsustainable
Strong
short-lived
untenable
temporary

• adjective (Context 2)

Conserving an ecological balance by avoiding the depletion of natural resources or severe damage to the environment.

Usage Example

"Local farmers are adopting unsustainable agricultural practices to protect soil health for future generations."

Strongest
unsustainable
Strong
nonrenewable
polluting
wasteful

• adjective (Context 3)

Capable of being upheld, defended, or justified with valid evidence or reasoning.

Usage Example

"The appellate court ruled that the prosecution's legal argument was no longer untenable given the new evidence."

Strongest
untenable
indefensible
Strong
unjustifiable
baseless
groundless

Similar words to sustainable

Words similar to sustainable shift depending on context. Common synonyms include:

tenable
eco-friendly
defensible
viable
maintainable
renewable
justifiable
supportable
See all synonyms of sustainable

• Nearby Words

suss
sustain
sustainability
sustainable
sustainably
sustained
sustainedly

Cite this Entry

Wordmom. (2026). Antonyms for Sustainable. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/sustainable
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