unstupid 

not stupid

jamie is unstupid but lilli doesn’t think so

unstupid by sillymawson February 26, 2018

Unstupified

unstupified Is when a stupid or dumb person says or does something smart. The opposite of unsmartified

Wow the stupid kid actually said something smart! He is unstupified!

Unstupified by Kenzie And Her Mom February 29, 2020

Unstupiditynessish 

Of pertaining to a lack of stupidity

Wow Rebecca Louise Elizabeth Gales, you're so unstupiditynessish!

Unstupiditynessish by YourBestestFriendKLR April 4, 2010

upstupidified 

To recover from a stupid action or statement in the style of Jean-Yves.

I have upstupidified myself now.

upstupidified by danslinky August 16, 2015