Uncertain answer
I believe the answer is:
guess
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">uncertain answer</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 guess that I've seen before include "Reckon" , "Speculate" , "Theory" , "Imagine" , "Make stab at" .)