Do as ordered (4)
I believe the answer is:
obey
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">do as ordered</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for obey that I've seen before include "Do what one is told" , "Accept instructions" , "Heed" , "Toe the line" , "Carry out (orders)" .)