hibernation: cessation from or slowing of activity during the winter; especially slowing of metabolism in some animals
dormancy: a state of quiet (but possibly temporary) inaction
antisocial personality disorder: a personality disorder characterized by amorality and lack of affect; capable of violent acts without guilt feelings (`psychopathic personality' was once widely used but was superseded by `sociopathic personality' to indicate the social aspects of the disorder, but now `antisocial personality disorder' is the preferred term)