n. A person with an antisocial personality disorder, exhibiting antisocial behavior that usually is the result of social and environmental factors in the person's early life.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. someone with a sociopathic personality; a person with an antisocial personality disorder (`psychopath' was once widely used but has now been superseded by `sociopath')
Word Usage
"I use the term sociopath, because I want people to understand that we're talking not only about people who can be quite violent, but also about people who are not and never will be violent."