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a dumb fucking word that if used, ironically, means the speaker is stupid.

Speaker 1: Man, I'm so sick of all the stupidness in politics these days.

Speaker 2: Dude, what are you, a 7 year old? It's stupidity, dumbass. Stupidness isn't a word.
by Luke D April 22, 2008
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Describing how stupid/acknowledging how much of an imbecile one is being.
Teen: I'm gonna get in this shopping cart and fly off the roof!

Parent: That's the stupidest thing I've ever heard. I can just FEEL your stupidness levels rising.
by Kazaen June 21, 2011
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My sister said that my name is the definition of stupidness but little did she know it was her
by idisadf January 30, 2018
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