Enemies (4)
I believe the answer is:
foes
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">enemies</span>' is the definition.<br/ ><span class="explanation-format__explanation">(a foe is an enemy or rival)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for foes that I've seen before include "Adversaries" , "Enemies" .)