How do they say hello in Brazil?

The most common way to say hello in Brazil is "Olá" (pronounced oh-LAH).

Here are some other greetings you might hear:

* "Bom dia" (Good morning) - Used from sunrise to noon.

* "Boa tarde" (Good afternoon) - Used from noon to sunset.

* "Boa noite" (Good evening/night) - Used from sunset to sunrise.

* "Oi" (Hi) - A more informal and casual greeting.

* "E aí?" (What's up?) - A very informal and friendly greeting, similar to "Hey" in English.

Important Note: While Brazilians are generally friendly and welcoming, it's always best to start with a formal greeting like "Olá" or "Bom dia" unless you are in a very informal setting.