Deadly pale (5)
I believe the answer is:
ashen
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">deadly pale</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ashen that I've seen before include "pale in colour" , "Greyish" , "Like bird" , "'Very pale, from shock say (5)'" , "showing signs of anaemia" .)