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
be cautious upon
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "be cautious upon" is not commonly used in written English and may sound awkward.
It could be used when advising someone to exercise caution in a specific situation or context. Example: "You should be cautious upon entering the construction site, as there may be hazards present."
Wiki
News & Media
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
1 human-written examples
Be cautious upon arrival.
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
He has been cautious.
News & Media
This result suggests that HIV physicians need to be cautious about basing clinical decisions merely upon measured lipid levels in HIV-infected patients.
Science
Samsung continues to be cautious on the battery front after flying too close to the sun, once upon a time.
News & Media
Be cautious, guys.
News & Media
Must be cautious.
News & Media
He would be cautious.
News & Media
If not, be cautious.
News & Media
Be cautious ground hog.
News & Media
"But he is cautious, and I will be cautious".
News & Media
Inference making should be cautious and restrained.
Expert writing Tips
Best practice
When advising someone to be cautious in a specific situation, consider using more common alternatives like "be careful when" or "exercise caution in" for clarity and naturalness.
Common error
Avoid using "be cautious upon" in everyday writing where simpler alternatives like "be careful" or "watch out" would suffice. Overusing this phrase can make your writing sound unnecessarily formal or stilted.
Source & Trust
74%
Authority and reliability
3.2/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "be cautious upon" functions as an imperative phrase, directing someone to exercise caution. It modifies the action that follows, indicating the manner in which it should be performed. Ludwig shows examples where it is used to advise care in specific situations.
Frequent in
Wiki
33%
News & Media
33%
Science
33%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "be cautious upon" serves as an imperative, advising care in specific situations. While grammatically acceptable, it's less common than alternatives like "be careful when" or "exercise caution in". Ludwig indicates that its usage is relatively rare and appears in neutral to formal contexts, including news articles and wiki pages. As such, consider simpler alternatives for greater clarity and naturalness in writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
be careful
This is a general and widely used expression of caution.
exercise caution
This alternative emphasizes the act of actively being careful.
be vigilant
This alternative suggests a state of heightened awareness and watchfulness.
be on your guard
This implies being prepared for potential threats or dangers.
take precautions
This suggests specific actions to prevent harm or mistakes.
remain alert
This highlights the importance of staying aware of your surroundings.
be circumspect
This alternative emphasizes careful consideration of all circumstances before acting.
proceed with care
This implies a gradual and deliberate approach to avoid problems.
watch out
This is a more direct and informal way of warning someone to be careful.
mindful
Implies keeping something in mind to avoid danger.
FAQs
What does "be cautious upon" mean?
The phrase "be cautious upon" means to be careful or wary when something happens. It suggests exercising caution in a particular situation.
What can I say instead of "be cautious upon"?
You can use alternatives like "be careful when", "exercise caution in", or simply "be careful" depending on the context.
Is "be cautious upon" grammatically correct?
The phrase "be cautious upon" is grammatically acceptable but less common. More common alternatives are often preferred for clarity.
How to use "be cautious upon" in a sentence?
You might say, "Be cautious upon entering the construction site, as there may be hazards present." However, alternatives like "Be careful when entering..." are often more natural.
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
74%
Authority and reliability
3.2/5
Expert rating
Real-world application tested