Formal:
* Namaste (नमस्ते): This is the most common and respectful greeting. It literally means "I bow to you" and is used in formal settings and when addressing elders.
* Aap kaise hain? (आप कैसे हैं?): This means "How are you?" and is a polite way to start a conversation.
* Shubh prabhat (शुभ प्रभात): This means "Good morning" and is used in the mornings.
* Shubh ratri (शुभ रात्रि): This means "Good night" and is used in the evenings.
Informal:
* Kya haal hai? (क्या हाल है?): This means "How are you?" and is a more casual way to say hello.
* Kaise ho? (कैसे हो?): This also means "How are you?" and is even more casual.
* Salaam (सलाम): This is a common greeting in parts of India and is used among friends and family.
Other options:
* Jai Hind (जय हिंद): This means "Victory to India" and is a patriotic greeting.
* Sat Shri Akal (सत श्री अकाल): This is a Sikh greeting.
It's important to note that the way you greet someone in Hindi depends on factors like your relationship with them, the situation, and your personal preference.