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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
that's preposterous
Grammar usage guide and real-world examplesAlternative expressions(20)
that's absurd
that's ridiculous
that's unbelievable
that's a load of rubbish
you've got to be kidding me
That's outrageous
highly irregular
substandard
that's unacceptable
that's incredible
that's amazing
that's astonishing
that's remarkable
that's hard to believe
that's fantastic
that's tremendous
that's superb
that must be a joke
I'm still in disbelief
I can't believe it
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
13 human-written examples
"Well that's preposterous.
News & Media
That's preposterous.
News & Media
That's preposterous, insane".
News & Media
On the face of it, no, that's preposterous.
News & Media
("That's preposterous," Zuckerman said. "I long ago became uninterested in unavailable women").
News & Media
"That's preposterous," Mr. Romney said at a news conference at his former campaign headquarters in Boston.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
47 human-written examples
I involuntarily and audibly react to ones that are preposterous to me.
News & Media
"White House Down" is a hoot and a half, a shameless popcorn entertainment that is preposterous and diverting in just about equal measure.
News & Media
That is preposterous, my friends.
News & Media
"That was preposterous, insane, like not even music at all.
News & Media
Hindu apologists claim they are only��reacting to Muslim intransigence, but that is preposterous.
News & Media
Expert writing Tips
Best practice
Use "that's preposterous" when you want to express strong disagreement or disbelief in a situation where the statement or idea is seen as absurd or ridiculous. This phrase is suitable for informal or semi-formal settings.
Common error
Avoid using "that's preposterous" in very formal writing or professional settings, where a more measured and respectful tone is expected. Instead, opt for phrases like "that is highly improbable" or "that claim requires further substantiation".
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that's preposterous" functions as an exclamatory statement expressing strong disagreement or disbelief. The examples in Ludwig suggest it's often used as a direct rebuttal to a statement considered absurd.
Frequent in
News & Media
100%
Less common in
Science
0%
Formal & Business
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "that's preposterous" is a phrase used to express strong disbelief or disagreement, denoting something as absurd or ridiculous. As Ludwig demonstrates, it is primarily found in News & Media, fitting into a neutral register. While grammatically correct and common, it's important to consider the context, avoiding its overuse in formal settings. Alternatives like "that's absurd" or "that's ridiculous" may be suitable depending on the desired tone.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that's absurd
Replaces "preposterous" with a more common synonym, "absurd", maintaining the same level of disbelief.
that's ridiculous
Substitutes "preposterous" with "ridiculous", another close synonym implying something is laughable and unreasonable.
that's ludicrous
Replaces "preposterous" with "ludicrous", which also suggests absurdity, but might be perceived as slightly more formal.
that's outrageous
Shifts the focus slightly from pure absurdity to indignation at something unacceptable or shocking.
that's unbelievable
Focuses on the incredibility of the statement, rather than its inherent absurdity.
that's nonsense
Indicates that the statement is illogical and without value or meaning.
that's a load of rubbish
An informal British expression conveying strong disagreement and disbelief.
that's complete hogwash
An informal expression that implies that something is utter nonsense or untrue.
that's simply not true
Directly refutes the statement, rather than commenting on its absurdity.
that's beyond belief
Emphasizes that the statement is so extraordinary that it is hard to believe or accept.
FAQs
What does "that's preposterous" mean?
The phrase "that's preposterous" means that something is absurd, ridiculous, or completely contrary to reason. It expresses strong disbelief or disagreement.
Is "that's preposterous" formal or informal?
"That's preposterous" is generally considered semi-formal to informal. While acceptable in many contexts, it may be too strong for very formal or professional settings.
What can I say instead of "that's preposterous"?
You can use alternatives like "that's absurd", "that's ridiculous", or "that's ludicrous" depending on the context.
How can I use "that's preposterous" in a sentence?
You can use "that's preposterous" to express your disbelief or disagreement with a statement. For example, "He claimed he could fly, but that's preposterous!"
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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