In complete disorder (7)
I believe the answer is:
chaotic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">in complete disorder</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for chaotic that I've seen before include "All over the place" , "In utter confusion" , "Disorderly, shambolic" , "In a confused state" , "totally out of order?" .)