What part of speech is cool?

"Cool" can be several parts of speech, depending on how it's used in a sentence:

* Adjective: Describing something that is pleasant, refreshing, or stylish.

* Example: "The pool water was cool and refreshing."

* Interjection: Expressing approval or agreement.

* Example: "Cool, I'll meet you there."

* Verb: To become lower in temperature.

* Example: "The soup is cooling on the stove."

* Noun: (Informal) A person who is considered stylish or trendy.

* Example: "He's such a cool dude."

So, it's important to look at the context of the sentence to determine which part of speech "cool" is functioning as.