stupidity Meaning, Definition & Usage

  1. noun a poor ability to understand or to profit from experience
  2. noun a stupid mistake
    betise; folly; foolishness; imbecility.

WordNet

Stu*pid"i*ty noun
Etymology
L. stupiditas: cf. F. stupidité.
Definitions
  1. The quality or state of being stupid; extreme dullness of perception or understanding; insensibility; sluggishness.
  2. Stupor; astonishment; stupefaction. R.
    A stupidity Past admiration strikes me, joined with fear. Chapman.

Webster 1913