Nerd

A nerd is a person seen as overly intellectual, obsessive, introverted, or lacking social skills. Such a person may spend inordinate amounts of time on unpopular, little known, or non-mainstream activities, which are generally either highly technical, abstract, or relating to niche topics such as science fiction or fantasy, to the exclusion of more mainstream activities. Additionally, many so-called nerds are described as being shy, quirky, pedantic, and unattractive.

Originally derogatory, the term "nerd" was a stereotype, but as with other pejoratives, it has been reclaimed and redefined by some as a term of pride and group identity. Provided by Wikipedia