nerd

Translation

オタク / マニア / 勉強家

Meaning

Someone extremely enthusiastic and knowledgeable about a particular subject, often one considered niche or academic, who may be perceived as socially awkward or unfashionable.

Examples

• She was a total computer nerd, able to fix any software problem with ease.
  She was a total computer nerd, able to fix any software problem with ease.
• The science club was full of nerds who loved discussing quantum physics.
  The science club was full of nerds who loved discussing quantum physics.