nerd nerd [nɜːd ǁ nɜːrd] noun [countable] informal
someone who knows a lot about a technical subject, usually computers, but who is not good at communicating with people; = GEEK:
• The big market for internet shopping may be not computer nerds but the elderly.
— nerdish also nerdy adjective :
• nerdish hackers
Financial and business terms. 2012.