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 confidential
Grammar usage guide and real-world examplesAlternative 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
14 human-written examples
In the case that you've ingested a harmful substance, the National Poison Control Center hotline is a resource that's confidential and offers non-emergency or emergency assistance.
Academia
"We believe if we build a simple and warm tech-based experience that's confidential and secure, we can get more people engaged with the mental health system.
News & Media
Zuckerberg then got cagey, explaining that "I want to be careful here because our work with the special counsel is confidential and I want to make sure that in an open session I'm not revealing something that's confidential".
News & Media
That's confidential information held by the federal government and the drug companies.
News & Media
"That's confidential," Mr. Keitel said last week, sitting in his dressing room at a rehearsal space in Chelsea.
News & Media
"That's confidential," said the buyer, Shahid Khan, as he posed beside the seller, Mohamed al-Fayed, at the club's venerable old ground.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
46 human-written examples
Confidential: In MIT Institutional Research, we most often conduct surveys that are confidential but not anonymous.
"They were, in fact, not using anything that was confidential," Mr. Winter said.
News & Media
— kamala Students should think of the Common Application as a process that is confidential in every way.
News & Media
This will require us to review our current finding aid data to ensure that nothing that is confidential is accidentally made available, such as student or patient names.
Academia
Choose a location that is confidential and provide time to clearly understand the next steps.
News & Media
Expert writing Tips
Best practice
Use "That's confidential" when you genuinely cannot disclose information due to privacy, legal, or ethical reasons. Be direct and avoid unnecessary explanations to maintain clarity and professionalism.
Common error
Avoid using "That's confidential" in casual conversations where the information isn't genuinely sensitive. It can create an unnecessary sense of formality or mistrust. Instead, opt for more relaxed alternatives like "I'd rather not say" or "It's a personal matter".
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "That's confidential" functions as a declarative statement used to indicate that specific information should not be disclosed. It serves as a polite yet firm refusal to share private, sensitive, or legally protected details. Ludwig examples confirm its usage across various contexts, typically involving matters of privacy or discretion.
Frequent in
News & Media
30%
Academia
25%
Science
20%
Less common in
Wiki
10%
Formal & Business
10%
Reference
5%
Ludwig's WRAP-UP
In summary, the phrase "That's confidential" serves as a polite yet firm declaration that specific information is private and not to be disclosed. Ludwig examples show that it is grammatically correct and appears across various contexts like news, academia, and science. Though its frequency is uncommon, it's essential to use it judiciously, primarily in formal and professional settings. Alternatives include phrases like "That information is private" or "I'm not at liberty to say". Remember, while maintaining confidentiality is crucial, avoid overusing the phrase in casual settings, which could come across as overly formal or create unnecessary tension.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
That information is private
Replaces "confidential" with "private" maintaining a similar level of formality and secrecy.
I'm not at liberty to say
Indicates that the speaker is restricted from sharing the information.
That's off the record
Implies that the information should not be publicly disclosed.
That's privileged information
Suggests the information is legally protected and cannot be revealed.
I'm afraid I can't disclose that
A polite way of refusing to share confidential information.
That's not for public consumption
Emphasizes the information's exclusivity and inappropriateness for general knowledge.
That's a trade secret
Implies the information is vital to a business's competitive advantage.
It's need-to-know information
Suggests access is restricted to individuals with a specific requirement.
That's classified
Indicates the information is officially protected by a government or organization.
I'm keeping that under wraps
Implies secrecy and a deliberate intention to conceal the information.
FAQs
How can I use "That's confidential" in a sentence?
You can use "That's confidential" to politely decline sharing information that is private or restricted. For instance, when asked about financial details, you might respond, "I'm sorry, "that's confidential".".
What are some alternatives to saying "That's confidential"?
Depending on the context, you can use alternatives such as "That information is private", "I'm not at liberty to say", or "that's off the record". The choice depends on the specific nuance you want to convey.
Is it appropriate to use "That's confidential" in a casual conversation?
While grammatically correct, using "That's confidential" might sound overly formal in casual settings. Consider less direct alternatives like "I'd rather not say" or "It's a personal matter".
When should I use "That's confidential" instead of "It's a secret"?
"That's confidential" is suitable for professional or formal contexts where privacy or legal obligations are involved. "It's a secret" is more appropriate for informal situations where the information is simply something you don't want to share casually.
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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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested