Floccinaucinihilipilification

the act of considering something to be not at all important or useful - used mainly as an example of a very long word: The honour of being the longest non-technical word goes to floccinaucinihilipilification.

Senator Jesse Helms used the delightful word "floccinaucinihilipilification". I used floccinaucinihilipilification in an essay once and the teacher wrote in the margin "I'm not giving you extra marks for this."

Sanskrit equivalent

निरुपयोगिता