nerd

American  

[nurd] / nɜrd /

Rarely nurd

noun

1. 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.

2. a person considered to be socially awkward, boring, unstylish, etc.

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verb (used without object)

1. 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!

verb phrase

1. nerd out 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.

2. nerd up 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!

idioms

1. nerd it up, 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!

nerd British  

/ nɜːd /

noun

1. a boring or unpopular person, esp one obsessed with something specified

   a computer nerd

2. a stupid and feeble person

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Other Word Forms

• nerdish
  adjective
• nerdy
  adjective

Etymology

Origin of nerd

An Americanism first recorded in 1950–55; obscurely derived expressive formation

Compare meaning

How does nerd compare to similar and commonly confused words? Explore the most common comparisons:

• dork vs. nerd

Explanation

If you hesitate to tell other people everything you know about computer programming, it might be because you're afraid they'll think you're a computer nerd, or someone with a single-minded interest in computers. The noun nerd is used to describe someone who is an expert in one particular thing, like computers, grammar, or "Star Wars" movies. Nerd can also mean someone lacking social skills, or a geeky, awkward person. The word nerd was popularized in the 1950s after showing up in the 1950 Dr. Seuss book "If I Ran the Zoo." A Dr. Seuss nerd would be sure to know this fact.

Example Sentences

The "Nerd Prom" as attendees affectionately call it brings together hundreds of Washington journalists and media executives to raise funds for scholarships and awards.

From Barron's • Apr. 25, 2026

Other similar events include Profs and Pints, which launched in 2017 in Washington, D.C., and Nerd Nite, which came to L.A. in 2011 and takes place at a brewery in Glendale.

From Los Angeles Times • Dec. 9, 2025

Adam Aleksic, a linguist who posts online as Etymology Nerd, says locking in's origins aren't certain but its use appears to have begun in the early 2000s - particularly in the African American community.

From BBC • Nov. 29, 2025

According to Nerd Stash, Owen has always been overprotective of Luke, even prohibiting the young boy from leaving the family farm out of fear that Luke will someday turn out like his dear old dad.

From Salon • May 5, 2022

“Everyone saw it. Anita, Chad, and Paul were like, high-fiving. He’s been annoying them all year, calling them the Nerd Squad and asking Anita if she’s going to get a perfect score on her SATs.”

From "Liar & Spy" by Rebecca Stead

Related Words

• geek