Silly fool (3)
I believe the answer is:
ass
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">silly fool</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 ass that I've seen before include "Quadruped; fool" , "Stupid fellow" , "Blockhead" , "Wally" , "Silly fellow in passionate state" .)