Find Antonyms

unsupportable Antonyms

Opposite of unsupportable

Because the opposite of unsupportable shifts with each meaning, the 15 antonyms and opposite words below are separated across 3 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Incapable of being defended, justified, or substantiated by facts or sound reasoning.

Usage Example

"The committee dismissed his hypothesis as scientifically supportable due to the lack of empirical evidence."

Strongest
supportable
defensible
justifiable
tenable
Strong
valid
well-founded

• adjective (Context 2)

Incapable of being maintained, funded, or sustained over time.

Usage Example

"Rising maintenance expenses eventually made the historic estate financially sustainable for the family."

Strongest
sustainable
maintainable
viable
Strong
manageable
affordable

• adjective (Context 3)

Too severe, painful, or extreme to be endured or tolerated.

Usage Example

"The sweltering heat inside the unventilated factory soon became bearable for the workers."

Strongest
bearable
tolerable
endurable
Strong
sufferable

Similar words to unsupportable

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

insupportable
unjustifiable
unbearable
unendurable
untenable
indefensible
unsustainable
intolerable
See all synonyms of unsupportable

• Nearby Words

unsung
unsunny
unsupervised
unsupportable
unsupportably
unsupported
unsupportive

Cite this Entry

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