Confusion, chaos (5)
I believe the answer is:
havoc
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">confusion</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">chaos</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for havoc that I've seen before include "Chaos, confusion" , "Pandemonium" , "Total destruction" , "Widespread destruction and great disorder" , "Ruin" .)