Antisocial
To be antisocial was to refuse to socialize with others, or to interact with others in an abnormal or harmful way.

In 2268, Doctor Leonard McCoy suggested that as a father might protect their child despite that child's becoming antisocial and even committing murder, so Richard Daystrom might be protecting the M-5 multitronic unit he'd created. ()

In 2370, Data postulated that if interphasic organisms were affecting him unconsciously, they might have caused his waking dreams and the antisocial behavior that followed. ()

See also 
 Sociopath

External link 
 
Psychological conditions