Term of office (6)
I believe the answer is:
tenure
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">term of office</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for tenure that I've seen before include "Right or period to hold, university post say" , "Dairy product" , "Neuter (anag)" , "Term of office" , "Incumbency" .)