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unviable Synonyms

Another word for unviable

Choosing another word for unviable depends on context, so the 11 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• adjective (Context 1)

Not capable of working successfully; not feasible, practical, or economically sustainable.

Usage Example

"Rising energy costs eventually made the old manufacturing plant financially nonviable."

Strongest
nonviable
infeasible
unfeasible
unworkable
Strong
impracticable
unsustainable
impractical
untenable

• adjective (Context 2)

Incapable of surviving, germinating, or developing normally outside a specific environment (especially of a seed, spore, egg, or fetus).

Usage Example

"Seeds stored in damp, warm conditions quickly become nonviable and fail to sprout in the spring."

Strongest
nonviable
inviable
Strong
sterile
Weak
barren

Opposites of unviable

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

viable
feasible
workable
sustainable
practicable
fertile
practical
achievable
See all opposites of unviable

• Nearby Words

unversed
unvested
unvetted
unviable
unviewed
unviolated
unvisitable

Cite this Entry

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