Rival (8)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rival</span>' is the definition.<br/ ><span class="explanation-format__explanation">(a rival is an opponent or enemy)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for opponent that I've seen before include "Adversary, competitor" , "Challenger" , "'Adversary, antagonist (8)'" , "member of other team" , "Foe or competitor" .)
(Other definitions for opposing that I've seen before include "Going against" , "Disapproving" , "Contending" , "modelling after work" , "trying to end a sea of troubles by it?" .)
(Other definitions for competitor that I've seen before include "rival trader?" , "Sporting contest entrant" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rival</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that antagonist is a type of rival)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for antagonist that I've seen before include "One who is hostile" , "rival" , "Opponent" , "Adversary" , "5 down (anag)" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rival</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that rival can be written as contender)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for contender that I've seen before include "One who strives" , "Candidate" , "one in the field" , "No red cent (anag.)" , "Competitor, challenger" .)