Find Synonyms

impossible Synonyms

Another word for impossible

Choosing another word for impossible depends on context, so the 22 synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
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• adjective (Context 1)

Not able to occur, exist, or be done.

Usage Example

"Without the proper encryption key, accessing the secure database is mathematically unfeasible."

Strongest
unfeasible
unattainable
unachievable
Strong
out of the question
impracticable
unrealizable
unworkable
inconceivable
unthinkable
hopeless

• adjective (Context 2)

Very difficult to deal with, tolerate, or resolve.

Usage Example

"The sudden schedule change put the event organizers in an intolerable situation."

Strongest
intolerable
unbearable
Strong
insufferable
unmanageable
insurmountable
intractable
unendurable
hopeless
unreasonable
Weak
outrageous

• noun (Context 3)

Something that cannot occur, exist, or be accomplished (usually preceded by 'the').

Usage Example

"The rescue team accomplished the impossibility by reaching the stranded climbers before nightfall."

Strongest
impossibility
Strong
miracle
Weak
pipe dream

Opposites of impossible

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

possible
feasible
manageable
possibility
achievable
tolerable
attainable
bearable
See all opposites of impossible

• Nearby Words

imposingly
imposition
impossibility
impossible
impossibly
impostor
impotence

Cite this Entry

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