English edit

Etymology edit

knucklehead +‎ -ery

Noun edit

knuckleheadery (uncountable)

  1. The stupid behaviour of a knucklehead.
    • 2013, Radley Balko, Rise of the Warrior Cop: The Militarization of America's Police Forces[1]:
      " [] his own tone and rhetoric might have been part of the reason for the outbreak of knuckleheadery and half-cockedness in the first place."