In a frenzy of violence, or on a killing spree; berserk.
Out of control, especially when armed and dangerous.
Synonym of run amok
The act of running amok.
One who runs amok; in Malay and Moro/Philippine culture, one who attempts to kill many others, especially expecting that they will be killed themselves.
Insane or mentally ill.
a demented idea
Crazy; ridiculous.
Suffering from dementia.