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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
a warning that
Grammar usage guide and real-world examplesUSAGE SUMMARY
"a warning that" is a correct and usable phrase in written English.
You can use it when you are alerting someone to a potential problem or danger. Example: He issued a warning that the tornado was approaching quickly.
✓ Grammatically correct
News & Media
Wiki
Science
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
"It was a warning that was not, alas, heeded".
News & Media
It was a warning that was all too quickly fulfilled.
News & Media
Mr. Moyo concluded his column with a warning that history risked repeating itself.
News & Media
They brushed aside a warning that appeared in Coram's 1999 annual report shortly after Crowley's appointment.
News & Media
You'll get a warning that explains "You'll permanently remove this message for all chat members.
News & Media
We all see those commercials where there is a warning that says "These Are Trained Professionals.
Wiki
This study is a warning that we should be cautious".
News & Media
It was a warning that vastly underestimated the storm.
News & Media
It also gave a warning that fourth-quarter profits would fall short of expectations.
News & Media
Mr Samak gave a warning that his patience with them was almost exhausted.
News & Media
Their global decline is a warning that we just might destroy our last wild food.
News & Media
Expert writing Tips
Best practice
When using "a warning that", ensure the warning is clear and specific to avoid ambiguity. For example, "a warning that the road ahead is icy" is more effective than "a warning that there might be problems."
Common error
Avoid using "a warning that" followed by a general statement. Instead, be precise about the potential danger or issue. For instance, instead of "a warning that things could go wrong", specify "a warning that the system may crash if overloaded."
Source & Trust
82%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a warning that" primarily functions as a noun phrase that introduces a subordinate clause expressing a potential risk or danger. Ludwig's examples demonstrate its use in various contexts to alert or caution the audience.
Frequent in
News & Media
48%
Science
23%
Wiki
12%
Less common in
Formal & Business
8%
Reference
5%
Encyclopedias
4%
Ludwig's WRAP-UP
In summary, the phrase "a warning that" functions as a noun phrase introducing a potential risk or danger, serving to alert the audience. Ludwig AI confirms its grammatical correctness and widespread use. While suitable for a variety of contexts, the phrase maintains a neutral register and is most frequently found in News & Media sources. To maximize clarity, ensure the warning is specific and avoid vagueness. For more casual communication, consider alternatives such as ""a heads-up that"". Remember, conveying caution effectively requires precision and awareness of your audience.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a caution that
Replaces "warning" with "caution", offering a slightly milder tone while maintaining the core meaning.
a forewarning that
Adds emphasis on the advance notice being given using "forewarning" for a more formal tone.
an alert that
Substitutes "warning" with "alert", highlighting the urgency or immediacy of the information being conveyed.
an indication that
Offers a more formal alternative, using "indication" to suggest that something points to a specific outcome or situation.
a signal that
Employs "signal" in place of "warning", suggesting a more subtle or indirect indication of a problem.
a sign that
Replaces "warning" with "sign", indicating that something serves as an omen or indication of a potential issue.
a heads-up that
Uses the informal expression "heads-up" instead of "warning", making the phrase more casual and conversational.
a caveat that
Substitutes "warning" with "caveat", introducing a specific condition or limitation that should be considered.
a notification that
Uses "notification" in place of "warning", suggesting an official or formal communication about a potential issue.
a premonition that
Conveys a sense of foreboding or intuition using the noun "premonition" instead of simply warning of something
FAQs
How can I use "a warning that" in a sentence?
You can use "a warning that" to introduce a potential danger or problem. For example, "The sign gave "a warning that" the bridge was unstable".
What are some alternatives to "a warning that"?
Some alternatives include "a caution that", "an alert that", or "a heads-up that", depending on the context and level of formality.
Is it more formal to say "a warning that" or "heads-up that"?
"A warning that" is more formal and suitable for professional or official contexts. "Heads-up that" is informal and better suited for casual conversation.
What's the difference between "a warning that" and "a sign that"?
"A warning that" implies a direct alert about a potential danger, while "a sign that" suggests an indirect indication or omen of something. For example, "a warning that the ice is thin" versus "a sign that winter is coming".
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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
82%
Authority and reliability
4.6/5
Expert rating
Real-world application tested