Shockingly bad (10)
There are a few possibilities for this:
outrageous
(Other definitions for outrageous that I've seen before include "Exorbitant" , "Shocking" , "undignified" .)
(Other definitions for atrocious that I've seen before include "Horrifying" , "Dreadful" , "Horrifyingly wicked" , "Terrible" , "Extremely bad" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">shockingly bad</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 appalling that I've seen before include "Absolutely horrifying" , "Greatly horrifying" , "page entirely covered in copying" , "Awful" , "Shocking, outrageous" .)