Uncontrollable anger (4)
I believe the answer is:
rage
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">uncontrollable anger</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 rage that I've seen before include "Terrible temper" , "storm" , "Gear up in violent temper" , "Be furious" , "spread rapidly" .)