fighter

fighter [n] person engaged in hostile encounter aggressor, antagonist, assailant, battler, belligerent, boxer, brawler, bruiser*, bully, champion, combatant, competitor, contender, contestant, disputant, duelist, GI, gladiator, heavy*, jouster, mercenary, militant, opponent, person-at-arms, pugilist, punching bag*, rival, scrapper, serviceperson, slugger, soldier, tanker*, warrior, wildcat*; concepts 358,366,412 —Ant. peacemaker