Formal:
* അതെ (athe) - This is the most common and formal way to say yes.
Informal:
* ഉം (um) - This is a simple and informal way to say yes, often used between friends and family.
* ആ (aa) - This is another informal way to say yes, often used in response to a question or request.
Other variations:
* തീർച്ചയായും (theerchayayum) - This means "certainly" or "absolutely" and can be used to emphasize agreement.
* ശരി (shari) - This means "okay" or "right" and can also be used to express agreement.
It's important to note that the best way to say "yes" in Malayalam will depend on the situation. Using a formal word like "athe" might be appropriate in a professional setting, while an informal word like "um" might be better suited for a casual conversation with friends.