Gratitude (gratidão)
====================

Portuguese (pt-pt)
^^^^^^^^^^^^^^^^^^

There are many ways to say "thank you" in Portuguese, that vary in formality and degree of gratitude:

* obrigado/a - thank you, informal
* muito obrigado/a - thank you very much
* obrigadinho/a - kindly thank you, friendly, you should smile when using this form, or be misinterpreted as being ironic/angry: thanks for nothing/thanks, but no thanks
* muitíssimo obrigado/a - thank you very, very much, I owe you, somewhat formal
* obrigadíssimo/a - thank you very, very much, I owe you, somewhat formal
* agradecido/a(s) - thank you, formal
* muito agradecido/a(s) - thank you very much, formal
* muitíssimo agradecido/a(s) - thank you very, very much, I owe you, formal
* agradecidíssimo/a(s) - thank you very, very much, I owe you, formal
* agradeço-te - thank you deeply, to a friend/coworker/colleague, formal
* agradeço-lhe - thank you deeply, to a superior/stranger, formal
* agradeço-vos - thank you deeply, to 2 or more people, formal
* grato/a(s) - thank you, very formal
* muito grato/a(s) - thank you very much, very formal
* muitíssimo grato/a(s) - thank you very, very much, I owe you, very formal
* gratíssimo/a(s) - thank you very, very much, I owe you, very formal

Portuguese (pt-br)
^^^^^^^^^^^^^^^^^^

* Obrigado/a! (formal)
* Muito obrigado/a! (formal)
* Muito agradecido/a (formal)
* Grato/a por/pelo(s)/pela(s)... (formal)
* 'brigado/a! (informal)- the first "o" is not pronounced.
* Obrigadão! (informal)
* Valeu! (very informal)
* Obrigados and obrigadas are not normally used in Brazil.


Notes on gender and number
^^^^^^^^^^^^^^^^^^^^^^^^^^

The "o" ending is used by males when giving thanks, e.g. obrigado. Females use the "a" ending, e.g. obrigada. If you are saying thanks in the name of a group of males, a mixed sex group or a collective entity - like a corporation to a client: you use the "os" ending, e.g. obrigados. When you say thanks in the name a group of females, you use the "as" ending, e.g. obrigadas.