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
his cool
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "his cool" is correct and usable in written English.
It can be used to refer to someone's composure or calmness in a situation, often in a positive context. Example: "Despite the chaos around him, he maintained his cool and handled the situation with grace."
✓ Grammatically correct
News & Media
Sports
General Conversation
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
Nez kept his cool.
News & Media
What punctured his cool?
News & Media
Perhaps he lost his cool.
News & Media
Maybe he's losing his cool.
News & Media
He kept his cool.
News & Media
Jocko lost his cool.
News & Media
Every player kept his cool.
News & Media
But already he is losing his cool.
News & Media
Probably not, was his cool response.
News & Media
Luckily, Mr Pinker rarely loses his cool.
News & Media
At times, he loses his cool.
News & Media
Expert writing Tips
Best practice
Use "his cool" to positively describe someone's ability to remain calm and collected, especially during stressful or challenging situations. It emphasizes their composure and level-headedness.
Common error
Avoid using "his cool" when describing someone who is indifferent or detached in a negative way. The phrase typically implies a positive sense of composure, not apathy.
Source & Trust
93%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "his cool" functions as a noun phrase, where "his" is a possessive adjective modifying the noun "cool". It describes a quality or state of being possessed by someone. Ludwig AI shows various examples where it highlights one's ability to remain calm in tough situations.
Frequent in
News & Media
45%
Sports
25%
Formal & Business
10%
Less common in
Science
8%
Encyclopedias
6%
Reference
6%
Ludwig's WRAP-UP
In summary, the phrase "his cool" is a common and grammatically correct way to describe someone's composure and calmness, especially in challenging situations. Ludwig AI confirms its positive connotations and frequent use in diverse contexts, primarily news and sports. Alternatives like "his composure" offer more formal options, while the phrase maintains a neutral register suitable for various audiences. It is important to use "his cool" to emphasize calmness but not indifference. With an expert rating of 4.5, its widespread acceptance and positive implications make it a valuable addition to one's vocabulary.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
his composure
Replaces "cool" with a more formal synonym emphasizing a calm and controlled manner.
his level-headedness
Focuses on the ability to remain rational and clear-thinking in stressful situations.
his calm demeanor
Highlights the outward appearance of calmness and collectedness.
his unflappability
Emphasizes the ability to remain undisturbed and composed, even in the face of challenges.
his poise
Stresses grace and elegance under pressure.
his self-control
Highlights the ability to regulate one's emotions and behavior.
his collectedness
Emphasizes the state of being calm, composed, and in control of one's emotions.
his imperturbability
Similar to unflappability, but perhaps even more extreme in its suggestion of invulnerability to emotional disturbance.
his sangfroid
A French term implying coolness and composure, especially in dangerous or difficult circumstances.
his equilibrium
Highlights the maintenance of mental and emotional balance.
FAQs
What does it mean to say someone "kept his cool"?
To say someone "kept his cool" means he remained calm, composed, and in control of his emotions, especially in a stressful or challenging situation. It implies he didn't panic or become agitated.
What's the difference between "his cool" and "his composure"?
"His cool" is generally more informal than "his composure". While both refer to calmness, "his composure" often suggests a more formal or deliberate control of emotions.
When is it appropriate to use the phrase "his cool"?
The phrase "his cool" is appropriate in various contexts, such as describing someone's reaction to a crisis, their performance under pressure, or their general demeanor in a high-stakes situation. It's versatile enough for news, sports, and casual conversation.
What's an antonym for the expression "lost his cool"?
An antonym for "lost his cool" is to remain composed. Or you can say the equivalent expression for remain composed is to "keep his cool".
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
93%
Authority and reliability
4.5/5
Expert rating
Real-world application tested