Impressive appearance (8)
I believe the answer is:
presence
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">impressive appearance</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 presence that I've seen before include "Attendance; spirit" , "Being (significantly) there" , "Being there or close by" , "Personal appearance, aura" , "Imposing appearance" .)