nerd

A foolish, inept, or unattractive person.

A person who is single-minded or accomplished in scientific or technical pursuits but is felt to be socially inept.

A person who is intellectual but generally introverted

One who has an intense, obsessive interest in something.

An unattractive, socially awkward, annoying, undesirable, and/or boring, person; a dork.

an insignificant student who is ridiculed as being affected or boringly studious

an intelligent but single-minded expert in a particular technical field or profession