2. Wildly; without self-control: Bradley went amok berserk one day when he went around shooting at everyone.
Click on this berserk link if you want more information about it.3. Pertaining to a confused or disorganized condition; especially, when armed and dangerous: The sheriff was looking for an escaped prisoner who was running amok in the forest.
In her unclear and mixed state of mind, Marita left her home and wandered amok on the prairie for hours.4. A description of a jumbled or disorganized situation: No matter how many experts Jack and Jill had consulted, all of their travel plans went amuck!
5. Etymology: from Malay amok, "attacking furiously". Earlier the word was used as a noun or adjective meaning "a frenzied Malay"; originally from a Portuguese form amouco or amuco.
Today anyone who wantonly shoots people is said to have run amuck (run amuck is the usual phrase to use); and so it indicates mental derangement, a madness to do violence or to kill indiscriminately.