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
that's not true
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that's not true" is correct and usable in written English.
It can be used to dispute something that someone has said or claimed. Example: "The article claimed that cats are smarter than dogs, but that's not true. Dogs are actually more trainable and have a better sense of smell."
✓ Grammatically correct
News & Media
Alternative expressions(2)
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
59 human-written examples
I'm proof that's not true.
News & Media
Actually that's not true.
News & Media
Maybe that's not true.
News & Media
Fortunately, that's not true.
News & Media
"That's not true here.
News & Media
That's not true football.
News & Media
Obviously that's not true.
News & Media
That's not true anymore.
News & Media
That's not true.
News & Media
O.K., that's not true.
News & Media
Surely that's not true.
News & Media
Expert writing Tips
Best practice
Use "that's not true" to directly contradict a statement or correct a misunderstanding. It's versatile and appropriate in many contexts, from casual conversations to more formal discussions.
Common error
While "that's not true" is useful, avoid overuse. Vary your language with alternatives like "that's incorrect" or "that's a misconception" to maintain engaging and nuanced communication.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that's not true" primarily functions as an interjection or declarative statement used to express disagreement, contradiction, or correction of a previously stated claim. Ludwig AI confirms its directness in refuting assertions. Its usage spans various contexts, from casual conversation to more formal debates.
Frequent in
News & Media
89%
Formal & Business
5%
Science
3%
Less common in
Encyclopedias
1%
Reference
1%
Wiki
1%
Ludwig's WRAP-UP
In summary, "that's not true" is a commonly used phrase to express disagreement or to correct an inaccurate statement. Ludwig AI confirms its grammatical correctness and usability across various contexts, predominantly appearing in news and media. While versatile, varying your language with more formal alternatives in professional settings can enhance communication. It's important to provide supporting evidence when using this phrase in debates. Remember, while it is suitable for both formal and informal contexts, it is more direct compared to other alternatives.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that isn't the case
Emphasizes that the stated situation or fact is incorrect.
that's incorrect
A more formal and direct way to state that something is wrong.
that's false
Clearly indicates that something is factually untrue.
that's simply not the truth
Adds emphasis to the falsehood of the statement.
that's a lie
A strong declaration that something is deliberately untrue.
that's not the reality
Highlights that the statement doesn't align with actual circumstances.
that's a misconception
Suggests the statement is based on a misunderstanding.
that's inaccurate
Indicates that the statement contains errors or inexact details.
that's far from the truth
Emphasizes a significant deviation from factual accuracy.
that's unfounded
Suggests that the statement lacks a solid basis or evidence.
FAQs
What are some alternatives to "that's not true"?
You can use alternatives like "that isn't the case", "that's incorrect", or "that's false" depending on the context.
Is it okay to use "that's not true" in formal writing?
While generally acceptable, "that's not true" is more suited for informal contexts. In formal writing, consider using phrases like "that is inaccurate" or "the claim is unfounded" for a more professional tone.
How can I use "that's not true" effectively in a debate?
Use "that's not true" to directly counter a claim, but always follow up with evidence or reasoning to support your rebuttal. Simply stating "that's not true" without further explanation is not persuasive.
What's the difference between "that's not true" and "that's a lie"?
"That's not true" simply indicates an inaccuracy, while "that's a lie" implies a deliberate attempt to deceive. "That's a lie" is a stronger and more accusatory statement.
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