Find Synonyms

impossibility Synonyms

Another word for impossibility

Choosing another word for impossibility depends on context, so the 10 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• noun (Context 1)

The state or quality of being impossible; inability to exist, happen, or be achieved.

Usage Example

"The engineer explained the mathematical unfeasibility of designing a perpetual motion machine."

Strongest
unfeasibility
infeasibility
impracticability
Strong
unattainability
hopelessness
futility

• noun (Context 2)

Something that cannot exist, occur, or be accomplished.

Usage Example

"Finishing the entire renovation before the end of the week was a practical nonstarter."

Strong
nonstarter
pipe dream
mirage
chimera

Opposites of impossibility

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

possibility
feasibility
reality
viability
practicability
achievability
certainty
attainability
See all opposites of impossibility

• Nearby Words

imposing
imposingly
imposition
impossibility
impossible
impossibly
impostor

Cite this Entry

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