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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
be cool
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "be cool" is correct and usable in written English.
It is typically used to suggest someone should remain calm, relaxed, or composed in a situation. Example: "When you meet her parents, just be cool and don't overthink it."
✓ Grammatically correct
News & Media
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
56 human-written examples
Now, that'd be cool".
News & Media
Just be cool.
News & Media
Wouldn't it be cool?
News & Media
That will be cool".
News & Media
Needs to be cool.
News & Media
"I can't be cool.
News & Media
Wouldn't that be cool?
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
4 human-written examples
What could be cooler?
News & Media
Mathias was cool.
News & Media
Nerds are cool.
News & Media
So: Messages is cool.
News & Media
Expert writing Tips
Best practice
When using "be cool" in dialogue, consider the speaker's personality and the overall tone of the scene. This phrase can convey anything from genuine reassurance to sarcastic dismissal, depending on the context.
Common error
Avoid using "be cool" in formal writing or professional settings. While widely understood, it can come across as too casual or informal for serious communication.
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "be cool" primarily functions as an imperative, directing or advising someone to adopt a calm, composed, or nonchalant attitude. As Ludwig AI shows, it's used in direct commands or suggestions to influence behavior. This aligns with the typical use of imperative verbs in English.
Frequent in
News & Media
36%
Wiki
27%
Science
10%
Less common in
Formal & Business
10%
Encyclopedias
5%
Reference
5%
Ludwig's WRAP-UP
In summary, the phrase "be cool" is a common and generally accepted imperative urging someone to maintain composure or calmness. As indicated by Ludwig AI, it's grammatically sound and widely used, particularly in informal contexts and across News & Media. While versatile, its use should be carefully considered in more formal settings. Alternatives like "/s/stay+calm" or "/s/keep+calm" may be more appropriate depending on the situation. Ludwig's examples showcase the phrase's diverse applications, from direct commands to subtle suggestions for emotional regulation.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
stay calm
Focuses specifically on maintaining a state of calmness, especially in stressful situations.
keep calm
Similar to "stay calm", but implies an effort to remain undisturbed.
stay composed
Emphasizes maintaining a dignified and controlled demeanor.
keep it together
Suggests preventing oneself from falling apart emotionally or mentally.
don't panic
Directly addresses avoiding a state of panic or fear.
play it cool
Implies feigning indifference or calmness to mask one's true feelings.
keep your head
Advises maintaining clear thinking and composure in a crisis.
chill out
Suggests relaxing and avoiding stress or excitement.
take it easy
Encourages a relaxed and unhurried approach to a situation.
be patient
Focuses on enduring a delay or provocation without complaint.
FAQs
How can I use "be cool" in a sentence?
"Be cool" is often used as an imperative, urging someone to remain calm or collected. For example: "Just /s/stay+calm and /s/be+cool, everything will be alright".
What does "be cool" mean in slang?
In slang, "be cool" can mean to remain calm, but it can also express approval or agreement. It can be similar to saying "okay" or "alright". For example, someone might say, "Is it okay if I borrow your pen?", and you could reply, "/s/Be+cool".
What can I say instead of "be cool"?
You can use alternatives like "/s/stay+calm", "/s/keep+calm", or "/s/relax" depending on the context. Other options include "/s/take+it+easy" or "/s/chill+out" for a more casual tone.
When is it inappropriate to use "be cool"?
It's generally inappropriate to use "be cool" in formal or professional settings, as it can sound too casual. Avoid using it in academic writing, business communications, or when addressing someone in a position of authority.
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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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested