What is a fullform of IDIOT?

There is no official full form for the word "idiot." It's a derogatory term and its use is generally discouraged.

The word "idiot" comes from the Greek word "idiotes," which originally referred to a private citizen who was not involved in public life. Over time, the word evolved to have its current meaning.

It's important to remember that using such terms is disrespectful and can be hurtful.