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
is that true
Grammar usage guide and real-world examplesUSAGE SUMMARY
The part of the sentence 'is that true' is correct and can be used in written English.
You can use this phrase to ask whether what was said or written is accurate or correct. For example: "I heard you got a promotion, is that true?".
✓ Grammatically correct
News & Media
Science
Wiki
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
20 human-written examples
But is that true?
News & Media
So is that true?
News & Media
But why is that true?
Science
But – is that true?
News & Media
Boss, is that true.
News & Media
Oh, is that true?
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
40 human-written examples
Was that true?
News & Media
Was that true for you?
News & Media
Was that true — was anything possible?
News & Media
Boy, was that true.
News & Media
Was that not true?
News & Media
Expert writing Tips
Best practice
Use "is that true" to seek confirmation or validation when you are uncertain about something you have heard or read. It's particularly effective in journalistic contexts or everyday conversations where verifying information is crucial.
Common error
Avoid using "is that true" excessively in formal writing. Opt for more sophisticated phrases like 'is there evidence to support this claim?' or 'what is the basis for this assertion?' to maintain a professional tone.
Source & Trust
87%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is that true" functions primarily as an interrogative, used to seek confirmation or validation of a statement. Ludwig AI confirms its correct usage in written English. It aims to determine the accuracy or veracity of information.
Frequent in
News & Media
62%
Academia
15%
Wiki
12%
Less common in
Science
11%
Formal & Business
0%
Encyclopedias
0%
Ludwig's WRAP-UP
The phrase "is that true" is a common and grammatically correct way to seek validation or confirmation of a statement. As indicated by Ludwig AI, this phrase is widely used and acceptable in written English. It functions as an interrogative, eliciting a response to verify the accuracy of information. It's frequently found in news and media sources, as well as academic and wiki contexts. While versatile, overuse in highly formal writing should be avoided in favor of more sophisticated alternatives. Remember, "is that true" is best used when directness and clarity are valued.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is that correct
This alternative directly questions the accuracy or correctness of a statement, focusing on factual precision.
is that factual
This variation emphasizes the objective truth and verifiable nature of the claim being questioned.
is that accurate
This focuses on the accuracy and exactness of the statement, questioning whether it aligns with reality.
is that right
Similar to 'is that correct', this questions the correctness or validity of the statement in a more general sense.
is that verifiable
Highlights the need for evidence or confirmation, questioning whether the statement can be proven.
is that so
Expresses surprise or disbelief, questioning the statement's validity indirectly.
is that the case
This alternative probes whether the situation is as it has been described, questioning circumstances.
can that be true
Indicates doubt or skepticism about the truthfulness of a statement, suggesting the speaker finds it hard to believe.
are you sure about that
This is a more direct way to express doubt, challenging the speaker's confidence in their statement.
really
A simple interjection that conveys disbelief and asks for confirmation or further explanation.
FAQs
How can I use "is that true" in a sentence?
Use "is that true" to directly question the veracity of a statement. For example, "I heard you're moving to another country, "is that true"?"
What's a more formal alternative to "is that true"?
In formal contexts, consider using alternatives like "is this accurate?", "is this verifiable?", or "can you confirm this?". These phrases maintain a professional tone while still seeking verification.
When is it appropriate to use "is that true"?
"Is that true" is suitable in informal settings or when seeking quick clarification. It's appropriate when directness is valued over formality, such as in casual conversations or journalistic interviews.
Which is correct, "is that true?" or "that is true?"
"Is that true?" is a question, while "that is true" is a statement. Use "is that true?" when you want to verify something, and "that is true" when you agree with a statement.
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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
87%
Authority and reliability
4.1/5
Expert rating
Real-world application tested