Find Antonyms

improbable Antonyms

Opposite of improbable

Because the opposite of improbable shifts with each meaning, the 9 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast 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 probable."

Strongest
probable
likely
plausible
Strong
believable
credible
expected

• adjective (Context 2)

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

Usage Example

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

Strongest
predictable
expected
Strong
typical
unsurprising

Similar words to improbable

Words similar to improbable shift depending on context. Common synonyms include:

unlikely
unexpected
doubtful
implausible
surprising
far-fetched
unbelievable
dubious
See all synonyms of improbable

• Nearby Words

imprisoner
imprisonment
improbability
improbable
improbably
impromptu
improper

Cite this Entry

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