Begin to wake (4)
I believe the answer is:
stir
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">begin to wake</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for stir that I've seen before include "Prison - mix" , "Prison (sl.); agitate" , "Whisk or whip" , "created by an agitator?" , "move very slightly, or agitate" .)