PSYCHOPATH

[informal] psycho (plural psychos) [noun] [C] - a person, usually suffering from a mental illness, who violently attacks or kills peopleThe vast majority of these prisoners are not dangerous psychopaths.Only a psychopath could be responsible for these terrible crimes.(specialized) In psychology a psychopath is a person who continually gets into trouble with society, has no feeling for other people, does not think about the future and does not feel bad about anything they have done in the past.