- a single-minded person obsessed with a hobby or pursuit or with a particular topic: My 13-year-old son is a computer nerd. I joined a book club and discovered another Jane Austen nerd.
- a person considered to be socially awkward, boring, unstylish, etc.
- to spend inordinate amounts of time, attention, energy, enthusiasm, etc., on an activity or topic of special interest to oneself; geek: I enjoy samurai movies, nerding about samurai movies, and the occasional slice of cake.Don't cross the street while you're nerding on your phone—you're likely to get hit!
- to engage with excessive enthusiasm in a hobby or in discussion about a topic of special interest to oneself: Back in the day, I nerded out hardcore over baseball cards.We sat there for half an hour while she nerded out on the metaphysical poets.
- to alter or be altered in a way that shows excessive enthusiasm for a special interest: He appears in that film nerded up as a philosophy genius.I'm going to nerd up my office with these five Charlie Chaplin posters.Wow, this simple conversation about cheese sure nerded up fast!
- to indulge oneself without restraint in a hobby, game, etc., in which one has an obsessive interest: Looking forward to nerding it up with everybody on Comic Trading Day at the store!
- a boring or unpopular person, esp one obsessed with something specified
- a stupid and feeble person
