stu·pid·i·ty 
/stʊˈpɪdəti, Brit stjʊˈpɪdəti/ noun
plural stu·pid·i·ties /stʊˈpɪdəti, Brit stjʊˈpɪdəti/ noun 1 [noncount] : the state of being foolish or unintelligent : the condition of being stupid
▪ I was shocked by the stupidity of their decision/behavior. 2 [count] : a stupid idea or action — usually plural ▪ the stupidities of war
▪ I was shocked by the stupidity of their decision/behavior.
