How do you say congratulations my friend in Portuguese?

There are a few ways to say "Congratulations, my friend" in Portuguese, depending on the level of formality and the context:

Formal:

* Parabéns, meu amigo! (This is the most common and neutral option.)

Informal:

* Parabéns, meu amigo! (You can also use this in an informal context.)

* Parabéns, camarada! (This is more informal and is used with close friends.)

* Parabéns, cara! (This is very informal and is used with very close friends.)

You can also add a specific detail to your congratulations, such as:

* Parabéns pelo seu sucesso! (Congratulations on your success!)

* Parabéns pela sua formatura! (Congratulations on your graduation!)

* Parabéns pelo seu aniversário! (Happy birthday!)

Remember to choose the appropriate level of formality based on your relationship with the person you are congratulating.