may ‧ hem /ˈmeɪhem/ BrE AmE noun [uncountable]
[ Date: 1400-1500 ; Language: Anglo-French ; Origin: mahaime 'crime of cutting off someone's arm or leg' , from Old French maynier ; ⇨ ↑ maim ]
an extremely confused situation in which people are very frightened or excited SYN chaos :
There was complete mayhem after the explosion.
cause/create/wreak mayhem
For some children, the first fall of snow is an opportunity to create mayhem.