(n.) One who fights; a combatant; a warrior.

Chinese boxer bantamweight battler belligerent belted knight bickerer black belt blade boxer bravo brawler brown belt bruiser bully bullyboy combatant competitor contender contestant disputant duelist enforcer featherweight fencer feuder fighting cock fighting man fisticuffer flyweight foilsman gamecock gladiator goon gorilla hatchet man heavyweight hood hoodlum hooligan jouster karate expert knight light heavyweight lightweight man-at-arms middleweight militant palooka plug-ugly prizefighter pug pugilist quarreler rioter rival rough rowdy ruffian sabreur savate expert scrapper scuffler serviceman sparrer squabbler strong arm strong-arm man strong-armer struggler swaddy swashbuckler sweat sword swordplayer swordsman thug tilter tough tussler warrior welterweight wrangler