Avoidable (8)
I believe the answer is:
needless
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">avoidable</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 needless that I've seen before include "Uncalled-for" , "Gratuitous" , "Lessened, as not required" , "Unnecessary, avoidable" , "Otiose" .)