bed ‧ lam /ˈbedləm/ BrE AmE noun [uncountable]
[ Date: 1600-1700 ; Origin: bedlam 'mental hospital' (17-18 centuries) , from Bedlam 'Bethlehem' (10-17 centuries) ; from the Hospital of St. Mary of Bethlehem former London mental hospital ]
a situation where there is a lot of noise and confusion SYN chaos :
When the bomb exploded, there was bedlam.