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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
is not true
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'is not true' is grammatically correct and can be used in written English.
You can use it to indicate that the information or statement that preceded it is untrue. For example, "The claim that running a marathon is easy is not true."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(20)
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
This is not true.
News & Media
"It is not true".
News & Media
Alas, it is not true.
News & Media
"But this is not true.
News & Media
But that is not true.
News & Media
"It simply is not true".
News & Media
Well, it is not true.
News & Media
Clearly, that is not true.
News & Media
This is not true either.
News & Media
This is not true Islam".
News & Media
And it is not true".
News & Media
Expert writing Tips
Best practice
When using "is not true", ensure you can provide evidence or reasoning to support your claim. Avoid making unsubstantiated denials.
Common error
Avoid simply stating something "is not true" without explaining why. Always provide context or evidence to support your claim. Simply negating a statement without further explanation can weaken your argument.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is not true" functions as a declarative statement of negation. It asserts the falsity of a preceding claim or statement. As noted by Ludwig AI, the phrase is considered grammatically correct and commonly used.
Frequent in
News & Media
48%
Science
32%
Encyclopedias
8%
Less common in
Wiki
6%
Formal & Business
3%
Reference
3%
Ludwig's WRAP-UP
The phrase "is not true" is a common and grammatically sound way to negate a statement, as Ludwig AI confirms. Predominantly used in News & Media and Science, it serves to contradict or correct information. While it maintains a neutral register suitable for various contexts, more formal alternatives like "is incorrect" or "is false" may be preferred in certain situations. It's crucial to support claims made with "is not true" with evidence or reasoning to avoid unsubstantiated denials. Alternatives include phrases like "is a lie", emphasizing intentional deception, or "is inaccurate", pointing to factual errors. The frequency of "is not true" in authoritative sources highlights its reliability as a tool for expressing disagreement and correcting misinformation.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is incorrect
Replaces "true" with its antonym "incorrect", maintaining a direct contradiction.
is false
Uses "false" as a direct synonym for "not true", offering a concise alternative.
is inaccurate
Indicates that the statement contains errors or does not align with the facts.
is simply wrong
Adds emphasis to the incorrectness of the statement, conveying a stronger disagreement.
is a lie
Emphasizes the deliberate nature of the untruth, suggesting intentional deception.
is far from the truth
Emphasizes the extent to which the statement deviates from reality, conveying a strong disagreement.
that's not the case
Shifts the phrasing to a more conversational tone, denying the validity of a previous statement.
is unfounded
Indicates a lack of evidence or basis for the claim, suggesting it's not supported by facts.
bears no resemblance to the truth
A stronger, more emphatic way of saying something is completely untrue.
that's a misconception
Highlights the widespread but incorrect belief, suggesting a common misunderstanding.
FAQs
How can I use "is not true" in a sentence?
You can use "is not true" to negate a statement or claim, indicating that it's incorrect. For example, "The rumor that the company is going bankrupt "is not true"."
What's a more formal way to say "is not true"?
In more formal contexts, you might use phrases like "is inaccurate", "is incorrect", or "is false" instead of "is not true".
When is it appropriate to use "is a lie" instead of "is not true"?
Use "is a lie" when you want to emphasize that the statement is not only untrue but also intentionally deceptive. "Is not true" is a more general negation.
What's the difference between "is not true" and "is unfounded"?
"Is not true" simply negates the truth of a statement. "Is unfounded" suggests that the statement lacks evidence or a factual basis.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested