Come back (6)
I believe the answer is:
return
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">come back</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for return that I've seen before include "Two-way ticket" , "Send/come back" , "Comeback" , "Yield" , "Come back with a formal report on transactions" .)