Not excessive or extreme (8)
I believe the answer is:
moderate
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">not excessive or extreme</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 moderate that I've seen before include "Reduce" , "Lessen the intensity" , "Within reasonable or average limits" , "Middle-of-the-road, not extreme" , "Become less extreme" .)