stupendidity 

A blend of stupendous(large or grand) and stupidity.

It was a task of such breathtaking stupendidity that only he could pull it off.

stupendidity by Mexicanadian November 12, 2007

Stupididity 

The thought or idea behind an act of stupididedness.
Refer to stupididedness for more information.

I can not believe the depth of your stupididity, milk goes in the fridge not the laundry r-tard.

Stupididity by Michael Whittaker February 13, 2008

Stupendisity

Stupendisity is the trait or state of being extremely ignorant or absurd, similar to idiocy. It refers to actions, remarks, or behaviors marked by a lack of knowledge, wisdom, or common sense.

"His decision to jump off the roof without a parachute was an act of sheer stupendisity."

Stupendisity by BingoLoy March 24, 2024