How do you say aunty in Tamil?

There are several ways to say "aunty" in Tamil, depending on the context and the age and relationship of the person you're referring to:

Formal:

* அத்தை (atthai): This is the most common and respectful way to address an older woman who is related to you, like your mother's sister or your father's sister.

* மாமி (maami): This is used to address your father's sister or your brother's wife.

* பெரியம்மா (periyamma): This means "elder sister" and is used to address a woman older than you who is not directly related.

Informal:

* அக்கா (akka): This is used for an older sister, or sometimes for a woman who is close to you like a friend's mother.

* சித்தி (sithi): This refers to a woman who is related to you through your mother's side (mother's sister, cousin etc.)

Note: The appropriate term to use depends on your relationship with the person and the social context. It's always best to err on the side of formality and use "அத்தை" unless you're sure of a more appropriate term.