How do you say Do know Tamil in Tamil?

There are a few ways to say "Do you know Tamil?" in Tamil, depending on the context and formality:

Formal:

* நீ தமிழ் தெரியுமா? (Nee tamil theriyaama?) - This is the most common and direct way to ask the question.

* தமிழ் மொழி உங்களுக்குத் தெரியுமா? (Tamil mozhi ungalukku theriyaama?) - This is a more polite and formal way to ask.

Informal:

* தமிழ் தெரியுமா? (Tamil theriyaama?) - This is a casual way to ask the question.

* தமிழ் பேசுறீங்களா? (Tamil paesureengala?) - This translates to "Do you speak Tamil?" but is often used to mean "Do you know Tamil?".

Note: The way you phrase the question can depend on your relationship with the person you are asking. It's best to use a formal phrase if you are speaking to someone older than you or in a professional setting. You can use a more informal phrase if you are speaking to a friend or someone you know well.