"Nerd" is a word used to describe someone who is very smart and interested in things that may not be popular or mainstream. They may spend a lot of time reading, studying, or playing video games, and may have a hard time fitting in with more social or athletic groups. It can be used as a positive or negative term depending on the context.

When to use it

The word "nerd" is commonly used in spoken and written English to describe a person who is very interested in academic or technical pursuits, such as science, math, computers, or engineering. A nerd is typically seen as someone who is very intelligent and knowledgeable about their chosen subject, often to the point of obsession or geeky enthusiasm. The term is often associated with a lack of social skills or coolness, and nerds are sometimes portrayed as being isolated or unpopular in social situations. However, in recent years, the word "nerd" has also taken on a more positive connotation, and many people proudly identify as nerds and celebrate their intellectual passions and interests.

Example sentences

  1. Sarah is such a nerd when it comes to math.
  2. John spends his weekends playing video games. He's a total nerd.
  3. Samantha always has her nose buried in a book. She's such a nerd.
  4. Sam is the biggest nerd in our class.
  5. I can't believe I'm dating a nerd.
  6. She's a total tech nerd and loves playing video games.
  7. Being a nerd doesn't necessarily mean you're not cool.
  8. My dad is a huge history nerd and can talk about it for hours.
  9. You don't have to be a nerd to do well in school.
  10. The best place to meet other nerds is at a comic book store.

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Reference:

nerd
1. a person, especially a man, who is not attractive and is awkward or socially…
Definition of NERD
a person devoted to intellectual, academic, or technical pursuits or interests; also : a person preoccupied with or devoted to a particular activity or field of interest; an unstylish or socially awkward person… See the full definition
Nerd - Wikipedia