the.com/geek

means Someone with an intense, enthusiastic expertise in a particular subject, especially one once considered nerdy or niche.

from From 'geck,' an old term for a fool or freak found in dialects of English and German. By the 1800s 'geek' named the carnival sideshow performer who did the shocking stunt — yes, the chicken thing — for gasps and coins. The word stayed down in that gutter for a century before computing culture hauled it up, scrubbed it off, and let it mean 'obsessive expert' instead of 'carnival wretch.' Nobody planned that rehabilitation; it just happened, word by word, as the people once mocked for loving circuits and syntax started running the circuits and syntax.