Forthwith (11)
I believe the answer is:
immediately
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">forthwith</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for immediately that I've seen before include "Straight away" , "Right now" .)