Exceptionally good (11)
I believe the answer is:
outstanding
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">exceptionally good</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 outstanding that I've seen before include "to be settled" , "in relief?" , "Superb" , "Not paid yet" , "Owing" .)