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

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