Shutdown (7)
I believe the answer is:
closure
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">shutdown</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for closure that I've seen before include "Resolution of emotional upheaval" , "End or act of shutting" , "end of debate" , "Ending" , "Settlement giving psychological satisfaction" .)