Make off without being seen (5,4)
I believe the answer is:
steal away
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">make off without being seen</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for steal away that I've seen before include "Leave" , "Make off without being seen" , "Sneak out" .)