Moral insanity

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insanity, so called, of the moral system; badness alleged to be irresponsible.

See also: Moral

References in classic literature ?
Thou shalt perish by the moral insanity of thy children
Infidelity was evidence of moral insanity and could see a woman end up in the asylum.
Prichard's definition of moral insanity aligns well with Georgina's conduct throughout James's story, although the cases Prichard cited to illustrate the condition do not, focusing as they do on changes in personality in response to external traumas, rather than on constitutional abnormal tendencies.