altercation, argle-bargle(chiefly British), argument, argy-bargy(chiefly British), battle royal, bicker, brawl, contretemps, controversy, cross fire, disagreement, dispute, donnybrook, falling-out, fight, hassle, imbroglio, kickup, misunderstanding, quarrel, row, scrap, set-to, spat, squabble, tiff, wrangle

clash, run-in, skirmish, tangle, tusslelogomachyfeud, vendettaattack, contention, dissension(also dissention)debate, difference, disputationfuss, objection, protest, protestationaffray(chiefly British), fisticuffs, fracas, fray, free-for-all, melee(also mêlée)catfight