Act for (9)
I believe the answer is:
represent
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">act for</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 represent that I've seen before include "Portray" , "Speak on behalf" , "Act for" , "Picture" , "Stand for or symbolise" .)