* Hello:
* Informal: "Olá" (pronounced "oh-la") - Use this with friends, family, and people you know well.
* Formal: "Bom dia" (pronounced "bohm djee-uh") - Used in the morning.
* Formal: "Boa tarde" (pronounced "bo-uh tahr-d'ee") - Used in the afternoon.
* Formal: "Boa noite" (pronounced "bo-uh no-ee-t'ee") - Used in the evening and at night.
* Goodbye:
* Informal: "Tchau" (pronounced "chow") - Use this with friends, family, and people you know well.
* Informal: "Até mais" (pronounced "ah-tay my-s") - Meaning "until later," this is a common way to say goodbye to friends and family.
* Formal: "Adeus" (pronounced "ah-day-oos") - Used for formal situations or when you might not see the person again.
* Formal: "Até logo" (pronounced "ah-tay lo-go") - Meaning "until soon," this is a polite way to say goodbye in formal settings.
* Formal: "Até amanhã" (pronounced "ah-tay ah-ma-nya") - Meaning "until tomorrow," used for formal situations.
Remember that these are just some basic greetings and farewells in Portuguese. There are many other ways to say hello and goodbye, depending on the context and the relationship between the speakers.