Find Antonyms

plausible Antonyms

Opposite of plausible

Because the opposite of plausible shifts with each meaning, the 13 antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• adjective (Context 1)

Seeming reasonable, probable, or worthy of belief (used especially of an argument, statement, or explanation).

Usage Example

"The historian offered a implausible explanation for the sudden abandonment of the ancient settlement."

Strongest
implausible
unbelievable
improbable
unlikely
Strong
far-fetched
unconvincing
incredible
dubious
absurd
preposterous

• adjective (Context 2)

Skilled at producing persuasive, smooth, and often specious arguments, sometimes to deceive or mislead (used of a person).

Usage Example

"He was such a unconvincing speaker that few investors questioned his promises until the company collapsed."

Strongest
unconvincing
Strong
artless
ingenuous
guileless

Similar words to plausible

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

credible
believable
reasonable
persuasive
probable
likely
glib
convincing
See all synonyms of plausible

• Nearby Words

platy
plaudit
plausibility
plausible
plausibly
play
playability

Cite this Entry

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