Synonyms to noncooperator

objector, apostate, bitter-ender, brawler, defendant, demurrer, diehard, disputant, dissenter, dissentient, dissident, intransigent, irreconcilable, last-ditcher, litigant, naysayer, negativist, nonconformist, obstructionist, obstructive, opinionist, opposer, opposition voice, oppositionist, plaintiff, protestant, protester, quarreler, recusant, resister, schismatic, scrapper, sectarian, sectary, separatist, wrangler, filibuster, filibusterer, frustrater, hinderer, impeder, marplot, obstructer, thwarter, agitator, battler, belligerent, belted knight, bickerer, blade, bravo, bully, bullyboy, combatant, competitor, contender, contestant, duelist, enforcer, extremist, fencer, feuder, fighter, fighting cock, foilsman, frondeur, g