Formal:
* சரி (sari): This is the most common and neutral way to say "okay".
* சம்மதம் (sammatham): This means "agreement" and is a more formal way to say "okay".
Informal:
* சாரி (saari): This is a more casual way to say "okay".
* சாரிங்க (saaringa): This is even more casual and used with friends or family.
Other options:
* பரவாயில்லை (paravaayilla): This literally means "no problem" and can also be used to mean "okay".
* நல்லா (nalla): This means "good" and can sometimes be used to mean "okay" in certain contexts.
Example:
* "சரி, நான் வருகிறேன்." (sari, naan varugiraen) - Okay, I'm coming.
* "சம்மதம், நீ சொல்றது சரியா." (sammatham, nee solrathu sariya) - I agree, you're right.
* "சாரி, நான் போறேன்." (saari, naan poren) - Okay, I'm leaving.
The best way to choose the right phrase depends on the situation and the person you are talking to.