Disorder, confusion (5)
I believe the answer is:
havoc
I believe this is a double definition.
'disorder' is the first definition.
(I've seen this in another clue)
'confusion' is the second definition.
(I've seen this before)
(Other definitions for havoc that I've seen before include "Pandemonium" , "Widespread destruction and great disorder" , "Mayhem" , "Carnage" , "Total destruction" .)