A person who commits antisocial acts without a sense of guilt or remorse, and who willingly repeats them.
Person with a personality disorder in which behavior is antisocial and, in the extreme, may be criminal; also called sociopath.
A person who behaves in an antisocial way and shows little or no guilt for antisocial acts and little capacity for forming emotional relationships with others. There is some evidence that EEG patterns of psychopaths are abnormal. Psychopaths tend to respond poorly to treatment but many mature as they age.
A person who consistently and repeatedly treads on, abuses, or violates the rights of others, often causing considerable harm.
An individual with a psychopathic condition.