How would you say hello in Brazilian?

The most common way to say hello in Brazilian Portuguese is "Olá!"

Here are some other options, depending on the situation:

* "Oi!" (Informal, like "Hi!")

* "Bom dia!" (Good morning)

* "Boa tarde!" (Good afternoon)

* "Boa noite!" (Good evening/night)

* "Tudo bem?" (How are you?)

Remember that "Olá" is the most versatile and polite greeting, while "Oi" is more casual.