Consultant (7)
I believe the answer is:
adviser
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">consultant</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for adviser that I've seen before include "Counsellor, mentor" , "Guide" , "subject's specialist consultant" , "Counseller" , "ID saver (anag.)" .)