lone wolf
idiomPart oflone
lone wolf — idiom
1. a person who prefers to live, work, or act alone rather than as part of a group,
1.idiom
Definition
a person who prefers to live, work, or act alone rather than as part of a group, and who often avoids close relationships with others.
Example
Eli has always been a lone wolf at the office, eating lunch at his desk instead of with colleagues.
The detective described the suspect as a lone wolf who had no close friends or family.