Not characteristic (8)
I believe the answer is:
atypical
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">not characteristic</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for atypical that I've seen before include "Not conforming to a type" , "Irregular" , "Abnormal, aberrent." , "Uncharacteristic" , "Not representative or usual" .)