Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
preposterous
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word 'preposterous' is correct and usable in written English.
It is used to describe something or an idea that is absurd or silly. Example sentence: His claim that he invented the internet was preposterous.
✓ Grammatically correct
News & Media
Formal & Business
Science
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
An Orange Order spokesman said: "This preposterous decision by the Parades Commission only underlines the increasing perception that its determinations are dictated by the threat of physical force opposition to our parades.
News & Media
Whitechapel, he considered, had been much belied, and many of his fellow countrymen had come away from it with preposterous stories of murder and misery.
News & Media
48 min: Polanski is booked for a preposterous challenge on Pilar.
News & Media
And the UK government has used every manner of evasion – including trying out the preposterous argument that because the term genocide was adopted by the UN in 1948, it couldn't be applied retrospectively.
News & Media
Michael Keaton is a washed-up movie star trying to reinvent himself as a serious actor on Broadway, but plagued with hallucinatory visions of "Birdman" – the preposterous superhero he once played.
News & Media
One of the biggest reasons for the surge in people prepared to pay preposterous amounts to smugglers for the uncertain prospect of reaching safety in Italy is that land routes into Europe are virtually closed.
News & Media
The demon has invaded you... "It sometimes happens that people completely unsuited for word-play will improvise an endless string of puns and wholly improbable idea relationships fit to outdo the ablest masters of this preposterous craft.
News & Media
A few days later, Gove talked to the FT about the "ridiculous" concentration of old boys from just one school, comparing Eton's "preposterous" contemporary grip at the Tories to Lord Salisbury's nepotistic hold a century before.
News & Media
Bonucci did not seem quite so tough when executing one of the most preposterous tumbles you will ever see during his team's game at Palermo.
News & Media
Sven-Goran Eriksson became a preposterous playboy, linked with such increasingly outré schemes that it always comes as something of a start to remember he once made IFK Gothenburg one of the leading forces in Europe.
News & Media
To get knotted up about spoiling the end of any television series is simply a preposterous waste of anyone's energy.
News & Media
Expert writing Tips
Best practice
Use "preposterous" to express strong disagreement or disbelief, emphasizing the absurdity of a statement or idea.
Common error
Avoid using "preposterous" in contexts that require a neutral or objective tone. It's a strong word, so use it when you want to express a clear opinion about something that seems blatantly absurd. In more balanced discussions, opt for alternatives like "questionable" or "unlikely".
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The adjective "preposterous" primarily functions to express strong disbelief or rejection of an idea, statement, or action due to its perceived absurdity. As Ludwig AI confirms, it's used to label something as completely contrary to reason or common sense.
Frequent in
News & Media
43%
Formal & Business
29%
Science
28%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The adjective "preposterous" is a powerful way to express disbelief or strong disagreement, signifying something utterly absurd or contrary to reason. Ludwig AI affirms its correct and usable status in English writing. Frequently encountered in news and media contexts, and also used in formal and business communications, "preposterous" conveys a clear opinion on illogical matters. When employing the term, ensure it aligns with the context's formality; avoid overusing it in neutral scenarios. As Ludwig's examples demonstrate, it effectively dismisses arguments or claims deemed completely flawed. Be mindful of its forceful nature and aim for alternatives such as "absurd" or "ridiculous" when a milder tone is appropriate.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
absurd
Focuses more on the quality of being ridiculous or unreasonable.
ridiculous
Highlights the laughable or silly nature of something.
ludicrous
Emphasizes the comical or farcical aspect.
nonsensical
Stresses the lack of sense or coherence.
foolish
Suggests a lack of wisdom or judgment.
outrageous
Implies something is shocking and unacceptable.
unthinkable
Suggests something is beyond consideration or belief.
inconceivable
Highlights the impossibility of imagining or grasping something.
far-fetched
Indicates something is unlikely or improbable.
implausible
Suggests something is not believable or credible.
FAQs
How to use "preposterous" in a sentence?
Use "preposterous" to describe something utterly absurd or ridiculous. For example, "His claim that he could fly was preposterous".
What can I say instead of "preposterous"?
You can use alternatives like "absurd", "ridiculous", or "ludicrous" depending on the context.
Which is correct, "preposterous" or "posterous"?
"Preposterous" is the correct term. "Posterous" is an outdated blogging platform, not a synonym.
What's the difference between "preposterous" and "unlikely"?
"Preposterous" implies something is absurd and ridiculous, while "unlikely" suggests something is improbable but not necessarily absurd. "Preposterous" is stronger in tone.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested