The most common and easiest way to say "thank you" in Portuguese is "obrigado" for men and "obrigada" for women. To thank someone for a specific thing in Portuguese, use the word "por". Here are some other ways to say "thank you" in Portuguese:
- Brigado, viu!
- Muito obrigado
- Brigadão (brigadinho/brigadinha)
- Valeu
- Grato, Grata
- Agradeço
- Agradecido
When someone says "thank you" to you in Portuguese, you can respond with "de nada" or "por nada".