A nerd is a person seen as overly intellectual, obsessive, introverted or lacking social skills. Additionally, many so-called nerds are described as being shy, quirky, pedantic, and unattractive.

What are nerdy qualities?

An obsession with detail, and boundless curiosity about the things which interest them, characterize the overall genus nerd, but other traits, such as extroversion, may vary on a geeky basis.