bickerer

a person who takes part in a dispute perpetual bickerers, the Taylors think nothing of having their private quarrels in public places Synonyms arguer, argufier, disputant, brawler, debater, disputer, fighter, quarreler (or quarreller), scrapper, squabbler, wranglerRelated Words advocate, codefendant, defendant, plaintiff, pleader; challenger, contender, contestant, skirmisher; fusser, nitpicker, pettifogger, quibbler