How do you say What are doing in Tamil?

The most common and natural way to say "What are you doing?" in Tamil is:

நீ என்ன பண்றீங்க? (Nee enna pannreeng?)

Here's a breakdown:

* நீ (Nee) - You (singular, informal)

* என்ன (Enna) - What

* பண்றீங்க? (Pannreeng?) - Are doing (this is the polite form of "doing" used when speaking to someone older or in a respectful context)

Note: You can use the informal "பண்றீ? (Pannree?)" if speaking to someone younger or a close friend.

Here are some other ways to say it depending on the context:

* சொல்லுங்க, நீங்க என்ன பண்றீங்க? (Sollunga, neenga enna pannreeng?) - Tell me, what are you doing? (More polite)

* என்ன வேலை பண்றீங்க? (Enna velai pannreeng?) - What work are you doing? (Used when asking about someone's profession)

* நீ என்ன செய்றீங்க? (Nee enna seyreeng?) - What are you doing? (Another way to say it, but less common)

Remember to adjust the formality of your speech depending on who you are talking to.