Be superior (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">be superior</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for excel that I've seen before include "Be highly proficient" , "Outrival" , "cap" , "Eclipse" , "Be exceptionally good (at something)" .)
(Other definitions for prevail that I've seen before include "Succeed ultimately" , "Be widespread; prove superior" , "get the upper hand" , "Triumph, overcome" , "Have opinion accepted" .)