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1. Someone who does not seek or like the company of others. Shannon should have known Brad would break her heart—he's a lone wolf who doesn't like getting close to anybody. A: "Does he have any friends at school?" B: "No, I think he's a lone wolf."
2. A terrorist who acts alone or independently of a larger group when carrying out an attack. The attack was carried out by another lone wolf who had no affiliation with terror groups but was inspired by radical postings online.
A person who prefers to do without the company or assistance of others. For example, Her nursery school teacher described Beth as a lone wolf, an assessment her parents found astonishing . This expression alludes to the tendency of some species of wolf to hunt alone rather than in packs. [c. 1900]
a lone wolf
A lone wolf is an independent person who likes doing things on their own, rather than doing them with other people. He was also somewhat of a lone wolf, never marrying. Latham's personal style is that of a political lone wolf.
lone wolfa person who prefers to act alone.
a ˌlone ˈwolfa person who chooses to work, live, be, etc. alone: In the police force he had the reputation of being something of a lone wolf.
n. a man who stays to himself. Fred is sort of a lone wolf until he has a few drinks.