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Webster 1913 Edition

Noun.

[

Psycho-

+ Gr. [GREEK], [GREEK].]

(Med.)

Mental disease. See

, 2.

–

Psyˊcho-path′ic

Adj.

–

Psy-chop′a-thist

Noun.

psychopathy ‎(plural psychopathies)

A personality disorder indicated by a pattern of lying, exploitation, heedlessness, arrogance, sexual promiscuity, low self-control, and lack of empathy and remorse. Violent and criminal offenses may be indicative of this disorder.

personality disorder