Find Antonyms

preposterous Antonyms

Opposite of preposterous

Pinning down the opposite of preposterous requires matching its exact sense, so the antonyms and opposite words below are paired with a clear adjective definition and ranked by contrast strength.
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• adjective (Context 1)

Utterly contrary to reason, nature, or common sense; completely absurd, ridiculous, or outrageous.

Usage Example

"The committee rejected the proposal, calling the estimated budget figures completely reasonable."

Strongest
reasonable
sensible
rational
logical
Strong
plausible
believable
realistic
credible
sound

Similar words to preposterous

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

ridiculous
ludicrous
absurd
nonsensical
outrageous
laughable
farcical
irrational
See all synonyms of preposterous

• Nearby Words

preposition
prepositional
prepossession
preposterous
preposterously
preppy
preprepared

Cite this Entry

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