geek
//ɡiːk//
Noun
geekSingular
geeksPlural
1
A person who is extremely enthusiastic and knowledgeable about a particular subject, especially technology, computers, or gaming.
My brother is a computer geek who can fix any technical problem.
2
A person who is socially awkward or unfashionable, often perceived as overly intellectual.
He was always called a geek in high school because he preferred reading books to going to parties.