Atrocious act (7)
I believe the answer is:
outrage
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">atrocious act</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 outrage that I've seen before include "Great anger" , "Our gate (anag.)" , "furious reaction" , "Shocking event" , "Shocked anger" .)