How do you say thank in Malayalam and how write it?

There are a few ways to say "thank you" in Malayalam, depending on the level of formality and the context:

Formal:

* നന്ദി (nandi) - This is the most common and formal way to say "thank you."

* ധന്യവാദം (danyavaadam) - This is another formal option, a bit more literary.

Informal:

* നന്ദി (nandi) - This is also used informally, but with a slightly less formal tone.

* ശുക്രം (shukram) - This is a more casual way to say "thank you."

* നന്ദി പറയാൻ (nandi parayaan) - This literally translates to "to say thank you" and is used as a polite way to express gratitude.

Written:

* നന്ദി (nandi)

* ധന്യവാദം (danyavaadam)

* ശുക്രം (shukram)

You can use any of these depending on the situation and your relationship with the person you are speaking to.