Formal:
* Frio: This literally means "cold," but it can be used to describe something cool in a literal sense (like the temperature) or figuratively.
* Legal: This is a more modern and slangy way to say "cool," similar to "awesome" or "great."
Informal:
* Maneiro: This is a very common and versatile word for "cool." It can be used to describe something stylish, interesting, or even just good.
* Massa: This is another slang term for "cool," often used to describe something impressive or enjoyable.
* Show: This is a more informal way to say "cool," and is often used to express approval or excitement.
* Irado: This literally means "angry," but in this context it means "awesome" or "cool."
It's important to consider the context and formality level when choosing the best translation for "cool."
For example, you might say "legal" to a friend about a new song, but "frio" when talking about a cool breeze.