Formal:
* विदाई (vidaai): This is a formal way of saying goodbye, often used in farewell speeches or when leaving a formal gathering.
* अलविदा (alvida): This is also a formal way of saying goodbye, and it's a more direct translation of "goodbye" from English.
Informal:
* नमस्ते (namaste): This is a general greeting, but it can also be used as a polite way of saying goodbye.
* शुभ रात्रि (shubh raatri): This means "good night" and can be used to say goodbye in the evening.
* खुश रहें (khush rahen): This means "stay happy" and is a friendly way to say goodbye.
* चलो (chalo): This means "let's go" and can be used to say goodbye to someone you're leaving with.
Other options:
* मिलते हैं (milte hain): This means "we will meet again" and is a more informal way of saying goodbye.
* अगली बार (agali baar): This means "next time" and is a good way to say goodbye if you're planning to see the person again.
The best way to say goodbye in Hindi depends on the situation and your relationship with the person you are talking to.