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unsupportable Synonyms

Another word for unsupportable

Choosing another word for unsupportable depends on context, so the 17 synonyms and similar words below are separated across 3 exact definitions and ranked by match 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 untenable due to the lack of empirical evidence."

Strongest
untenable
indefensible
unjustifiable
Strong
baseless
unfounded
groundless
unwarranted

• adjective (Context 2)

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

Usage Example

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

Strongest
unsustainable
unviable
unmaintainable
Strong
unmanageable
prohibitive

• adjective (Context 3)

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

Usage Example

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

Strongest
insupportable
unbearable
intolerable
unendurable
insufferable

Opposites of unsupportable

The opposite of unsupportable shifts depending on context. Common opposites include:

supportable
bearable
tenable
justifiable
defensible
sustainable
maintainable
endurable
See all opposites of unsupportable

• Nearby Words

unsung
unsunny
unsupervised
unsupportable
unsupportably
unsupported
unsupportive

Cite this Entry

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