Guess or gamble (9)
I believe the answer is:
speculate
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">guess</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that guess is a more specific form of speculate)</span><br/ ><br/ >'<span class="explanation-format__original">gamble</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ ></span>
(Other definitions for speculate that I've seen before include "Play the market" , "Make conjectures" , "Imagine" , "Gamble on investments" , "Bet; theorise" .)