Prefix with aggression
I believe the answer is:
micro
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">prefix with aggression</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for micro that I've seen before include "Prefix meaning very small or one millionth" , "Prefix meaning tiny, or one-millionth of a unit" , "needed in kitchen-sink dramas?" , "Very little" , "Extremely small" .)