The tenacity or
persistence to continually perform/do/say dumb things. Repeatedly performing, what most
intelligent people would consider dumb acts or narrative. To always 'shoot yourself in the foot,' self-sabotage; saying something which
obviously stretches the truth to fit one's narrative (usually stupid.) 'foot in the mouth' gossip or speaking ill of someone standing right behind you. Repeatedly trying to change an outcome and getting the same results is an act of dumbacity.
I can't believe the dumbacity of some people. They go out
all the time badgering others in futile attempts for a different conclusion. It's over, get over it, what dumbacity! He, who shall not be named, repeatedly promulgates a negative
narrative on a the LOSS he cannot
understand and claims 'stolen' from him. The dumbacity of the people which believe him.