Probable (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">probable</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for likely that I've seen before include "Probable, expected" , "Promising, probably" , "Has a good chance of being the case" , "Ilkley (anag.)" , "In prospect" .)