stupidity

1. A poor ability to understand or to profit from experience (synset 105653442)
   is a type of: inability - lack of ability (especially mental ability) to do something
   subtypes:

   • denseness, dumbness, slow-wittedness - the quality of being mentally slow and limited
   • dullness, obtuseness - the quality of being slow to understand
   • backwardness, mental retardation, retardation, slowness, subnormality - lack of normal development of intellectual capacities
   • craziness, folly, foolishness, madness - the quality of being rash and foolish
   • vacuousness - indicative of or marked by mental vacuity and an absence of ideas
2. A stupid mistake (synset 101250622)
   is a type of: error, fault, mistake - a wrong action attributable to bad judgment or ignorance or inattention
   same as: betise, folly, foolishness, imbecility

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