“Cool” usually means something is good, impressive, stylish, or pleasant. People also use it to mean calm and relaxed, as in “stay cool” or “keep cool.”
In daily conversation, people say “cool” to show approval or agreement. For example, if a friend shares good news, you might say “Cool!” It is a very common, casual word in English.
Meaning & Usage
“Cool” can describe a person, thing, idea, or situation. It often means something is liked or admired. It can also describe temperature, but in everyday speech, the “good/nice” meaning is more common.
Examples
“That’s a cool jacket.”
“Cool, I’ll see you tomorrow.”
“She stayed cool during the interview.”
Is “cool” formal or informal?
It is mostly informal. People use it in everyday speech, text messages, and friendly conversation.
Can “cool” mean temperature?
Yes. It can mean not hot, like “a cool day” or “cool water.”
What does “cool” mean as a reply?
As a reply, it usually means “okay,” “great,” or “I agree.”
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