Confidential, secret (7)
I believe the answer is:
private
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">confidential</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >'<span class="explanation-format__original">secret</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ ></span>
(Other definitions for private that I've seen before include "Army rank; secluded" , "One's own" , "Rank, concealed" , "'Saving - - Ryan' (film)" , "Personal or secret" .)