What is good thank in portuguese?

"Thank you" in Portuguese can be expressed in several ways, depending on the formality and context:

Formal:

* Obrigado (male)

* Obrigada (female)

Informal:

* Obrigado (male)

* Obrigada (female)

* Valeu (informal, more like "thanks")

* Obrigado, obrigado (male, very informal)

* Obrigada, obrigada (female, very informal)

You can also use "muito obrigado" (male) or "muito obrigada" (female) for "thank you very much".

For a specific thing, you can add a preposition:

* Obrigado por... (Thank you for...)

* Obrigada por... (Thank you for...)

For example:

* Obrigado por sua ajuda. (Thank you for your help.)

* Obrigada por me ajudar. (Thank you for helping me.)

Remember to use the correct gender (male or female) depending on the person you are talking to.