Badly affected (8)
I believe the answer is:
stricken
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">badly affected</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 stricken that I've seen before include "Suffering from illness" , "Affected by illness or grief - like a blow?" , "Wounded" , "Seriously afflicted" , "Deeply affected, by grief say" .)