nerd

noun4

1. •
   (slang, disapproving) A person who is intellectual but generally introverted.

   • The bullies used to call him a nerd at school.
2. •
   (informal) A member of a subculture revolving around intellectualism, technology, video games, fantasy and science fiction, comic books and assorted media.
3. •
   (informal) One who has an intense, obsessive interest in something.

   • a comic-book nerd
4. •
   (informal, offensive) One who is stupid and socially inept or unattractive; a social outcast.

   • ALICE: Prithee , what might a nerd be ? GLORIA: A nerd is an idiot or other person absurd. — 1976

noun1

1. •
   Initialism of nonerosive reflux disease.