A nerd is a person seen as overly intellectual, obsessive, introverted or lacking social skills. Many so-called nerds are described as being shy, quirky, pedantic, and unattractive.
See also: Nerd (disambiguation), (Pronounced 'Lĕh-'nérd 'Skin-'nérd), Angry Video Game Nerd, Zachary Levi, The Nerds, and Nerds and Monsters.