Ill-defined situation (4,4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ill-defined situation</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 grey area that I've seen before include "Unclear state of affairs" , "One of undefined boundaries" , "something hard to define" , "Ill-defined zone" , "concrete jungle?" .)