nincompooping 

The act of

1. doing nincompoopatic things.
2. being a nincompoop.
3. smelling like a nincompoop.

The nincompooping nincompoop was nincompooping around his fellow nincompoops.

nincompooping by Norne November 9, 2010

nincompoopish 

when someone is in the act of being a nincompoop

"I think it's kind of nincompoopish of him....is that even a word?...ok, well it's a word now." - Mrs. K 2022

nincompoopish by gawrmochiii March 23, 2022

Nincompoopness 

The act of being a nincompoop, silly

Everyone loved how silly I was. Happy to show them my nincompoopness

Nincompoopness by Big D/nincompoop June 19, 2021