Under wraps, confidential (6)
I believe the answer is:
secret
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">under wraps</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">confidential</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for secret that I've seen before include "Unknown or unobserved by others" , "Cloak-and-dagger" , "Cloak and dagger" , "It's not to be told" , "Not public" .)