from The American Heritage® Dictionary of the English Language, 4th Edition
- n. One who is affected with a personality disorder marked by antisocial behavior.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- 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.
from 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personality; a person with an antisocial personality disorder (`psychopath' was once widely used but has now been superseded by `sociopath')
Coined c. 1930 by George Everett Partridge, American psychologist; socio- + -path (Wiktionary)