Definition of mayhem noun from the Oxford Advanced American Dictionary

 

mayhem

 noun
noun
NAmE//ˈmeɪhɛm//
 
[uncountable]
 
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confusion and fear, usually caused by violent behavior or by some sudden shocking event There was absolute mayhem when everyone tried to get out at once. It only takes a few stupid people to create mayhem in a crowd.
See the Oxford Advanced Learner's Dictionary entry: mayhem