Beholder (8)
I believe the answer is:
observer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">beholder</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that beholder can be written as observer)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for observer that I've seen before include "Newspaper - witness" , "Spectator - or another weekly publication!" , "One watching, evaluating" , "Viewer" , "'Onlooker, spectator (8)'" .)