Expert, authority (6)
I believe the answer is:
pundit
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">expert</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">authority</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for pundit that I've seen before include "Talking expert" , "Learned authority" , "Pontificating expert" , "Maestro" , "Expert (sometimes self-appointed)" .)