amuck

from The American Heritage® Dictionary of the English Language, 5th Edition.

• adverb In a frenzy to do violence or kill.
• adverb In or into a jumbled or confused state.
• adverb In or into an uncontrolled state or a state of extreme activity.
• adjective Crazed with murderous frenzy.

from The Century Dictionary.

• Literally, in a state of murderous frenzy; indiscriminately slaughtering or killing: a term used in the Eastern Archipelago.
• Hence — To proceed in a blind, headstrong manner, careless of consequences, which are most likely to be disastrous.
• [Sometimes written in two words, and treated as a noun with the indefinite article.

from the GNU version of the Collaborative International Dictionary of English.

• In a frenzied and reckless manner.
• to rush out in a state of frenzy, as the Malays sometimes do under the influence of “bhang,” and attack every one that comes in the way; to assail recklessly and indiscriminately.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adverb In a frantic or frenzied and violent manner; in a confused, jumbled or uncontrolled state.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective frenzied as if possessed by a demon
• adverb in a murderous frenzy
• adverb wildly; without self-control