Formal:
* நன்றி (nandri): This is the most basic and common way to say "thank you" in Tamil. You can add "நல்ல வாழ்த்துக்களுக்கு" (nalla vaazhtthukkalaikku) after it, which means "for the good wishes".
* நன்றி, வாழ்த்துக்களுக்கு (nandri, vaazhtthukkalaikku): This is a more direct way to say "thank you for the wishes".
Informal:
* நன்றி, சார் (nandri, saar): This is a casual way to say "thank you" to someone you know well. You can add "வாழ்த்துக்களுக்கு" (vaazhtthukkalaikku) after it, which means "for the wishes".
* சாரி, வாழ்த்துக்களுக்கு (saari, vaazhtthukkalaikku): This is another informal way to say "thank you for the wishes".
You can also use a phrase that expresses gratitude and appreciation for the wishes:
* நல்ல வாழ்த்துக்களுக்கு மிக்க நன்றி (nalla vaazhtthukkalaikku mikka nandri): This means "thank you very much for the good wishes".
* உங்கள் நல்ல வாழ்த்துக்களுக்கு மிக்க நன்றி (ungal nalla vaazhtthukkalaikku mikka nandri): This means "thank you very much for your good wishes".
In addition to the above, you can also express your appreciation by saying:
* உங்க வாழ்த்துக்கள் எனக்கு மிகவும் சந்தோஷம் தந்தது (unggal vaazhtthukkalaikku enakku mikavum santhosham thanthatu): This means "Your wishes made me very happy".
The best way to express your gratitude is to choose a phrase that fits the situation and your relationship with the person you are thanking.