Adversary, Adverse, Alien, Antagonist, Antagonistic, Anti, Antipathetic, Antithetic, Approach, Attempt, Balance, Battle, Battler, Belligerent, Blade, Bravo, Brawler, Buck, Buffet, Bully, Challenge, Clashing, Combat, Combatant, Compare, Compete, Competing, Competition, Competitive, Competitor, Con, Conflicting, Contend, Strive, Struggle, Sword, Swordsman, Thug, Tie, Touch, Tough, Try, Twin, Uncooperative, Unfriendly, Vie, Vier, Vying, Wrangler, Contender, Contest, Contestant, Contradictory, Contrary, Cope, Correspond, Counter, Counterpart, Cross, Cutthroat, Disputant, Ditto, Draw, Emulate, Emulator, Enemy, Enforcer, Entrant, Equal, Equivalent, Even, Fellow, Fencer, Fight, Fighter, Fractious, Gladiator, Goon, Gorilla, Hood, Hoodlum, Hooligan, Hostile, Inimical, Jockey, Jouster, Knight, Knot, Like, Match, Mate, Meet, Militant, Negative, Obstinate, Opponent, Oppose, Opposed, Opposing, Opposite, Opposition, Oppositional, Parallel, Peer, Perverse, Player, Reach, Recalcitrant, Refractory, Repugnant, Resemble, Rioter, Rough, Rowdy, Ruffian