Find Synonyms

improbable Synonyms

Another word for improbable

Choosing another word for improbable depends on context, so the 12 synonyms and similar words below are separated across 2 exact definitions and ranked by match strength.
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• adjective (Context 1)

Not likely to be true or to happen; having a very low probability of occurring.

Usage Example

"The defense attorney argued that the prosecution's version of events was highly unlikely."

Strongest
unlikely
doubtful
Strong
implausible
far-fetched
unbelievable
dubious
questionable
unconvincing

• adjective (Context 2)

Unexpected and seemingly contrary to what one would normally expect in a given situation.

Usage Example

"The quiet librarian became an unexpected local hero after rescuing the family from the flood."

Strongest
unexpected
Strong
unlikely
surprising
unforeseen
astonishing

Opposites of improbable

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

probable
likely
predictable
plausible
expected
believable
unsurprising
typical
See all opposites of improbable

• Nearby Words

imprisonment
impro
improbability
improbable
improbably
impromptu
improper

Cite this Entry

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