50-50 chance (5)
I believe the answer is:
evens
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">50-50 chance</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 evens that I've seen before include "In betting, winning the amount staked" , "Balanced odds" , "1-1" , "Price" , "50:50 probability" .)