psychopath

psycho-,精神，心理，-path,疾病，词源同pathology.

psychopath (n.)

1885, in the criminal psychology sense, a back-formation from psychopathic.

The Daily Telegraph had, the other day, a long article commenting on a Russian woman who had murdered a little girl. A Dr. Balinsky prevailed upon the jury to give a verdict of acquittal, because she was a "psychopath." The Daily Telegraph regards this term as a new coinage, but it has been long known amongst Spiritualists, yet in another sense. ["The Medium and Daybreak," Jan. 16, 1885]

The case alluded to, and the means of acquittal, were briefly notorious in England and brought the word into currency in the modern sense.

1. He's a psychopath, a killer.

他是个精神变态杀人者。

2. She was abducted by a dangerous psychopath.

她被一个危险的精神变态狂给绑架了。

3. Diagnosing him as a psychopath was not a simple matter.

诊断他是一个心理变态者并不是一件简单的事.

4. Lana : Either an admirer or a psychopath, depending on who you ask.

仰慕者或精神病, 看你问谁了.

5. The newspapers say there's a psychopath going around hacking up college co eds.

报纸上说,有个精神病患者在男女共校的大学里转来转去并(女孩子)刀伤害.