dumassity 

the condition of being entirely absent of common sense

What is wrong with him? Dumassity.

dumassity by Mrs. H December 8, 2013

Dumbassitude 

The act of being a dumbass and getting an attitude when someone tells you that you are being a dumbass

Man my friend had a bad case of Dumbassitude after I told him to stop being a dumbass and trying to dump his girl

Dumbassitude by TinShells December 4, 2016

dumassery 

Full of dumbass
stupidity
not-so-smart decision

What is wrong with him?
Pure dumassery.

dumassery by angology October 27, 2013

DumbAssItis 

a viral infection of the brain which will never completely go away and appears randomly throught ones life

commonly referred to as DAI

The Presidential elections clearly defined even our countries leaders suffer from DumbAssItis.

DumbAssItis by michael February 26, 2005

dumbassity 

Actions of a dumb ass nature.

Ian's dumbassity of swearing around the teachers got us all screwed.

dumbassity by hbfir December 28, 2005

dumbassity 

(Noun) Extreme stupidity and failure to grasp logic or also the exhibition such stupidity. Something one would expect from a dumbass.

"After a certain age, it would be fair to consider inability to tell time dumbassity."

"The only explanation for such property damage is dumbassity of all involved"

dumbassity by Costa January 3, 2005

dumacity 

The state or quality of being a dumbass.

Evan's finished his assignments with dumacity, resulting in others having to redo his work.

dumacity by Peisinoe April 13, 2004