[ noun ] a poor ability to understand or to profit from experience
Used in print(Raymond J. Corsini et al., Roleplaying in Business...)
He refused to change his approach , and instead he attacked high_and_low - the officials for their not backing him , and subordinates for their laxness , stupidity , and stubbornness .(Breni James, Nights of the Kill....)
But stupidity was no consolation when it had rank .