Be in competition (3)
I believe the answer is:
vie
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">be in competition</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 vie that I've seen before include "Compete (with others)" , "Contend, compete" , "Engage in rivalry" , "Compete for something" , "Rival" .)