Formal:
* Dhanyavaad (धन्यवाद): This is the most common and formal way to say thank you. It is appropriate for all situations.
Informal:
* Shukriya (शुक्रिया): This is a more informal and casual way to say thank you. It's suitable for friends and family.
* Dhanyavaad (धन्यवाद): This can also be used informally.
* Aap ka bhaut bhaut dhanyavaad (आप का बहुत बहुत धन्यवाद): This means "Thank you very much."
Other options:
* Kripya (कृपया): This literally means "please" but can also be used to express thanks.
* Aapne aisa kiya (आपने ऐसा किया): This means "You did this" and implies gratitude.
The best way to choose which phrase to use depends on your relationship with the person you are thanking and the context of the situation.