Satisfy fully (4)
I believe the answer is:
sate
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">satisfy fully</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for sate that I've seen before include "Supply too much" , "Provide with more than enough" , "replete" , "Fill to satisfaction" , "Satisfy to the full" .)