Same word as quarrelled:

altercate, argue, battle, be at loggerheads, bicker, brawl, break with, bump, carp, caterwaul, cavil, charge, clash, collide, complain, contend, contest, cross swords, differ, disapprove, dispute, dissent, divide, embroil, fall out, feud, fight, find fault, get tough with, hassle, have it out, have words, lock horns, mix it up, object to, row, scrap, set to, spar, spat, squabble, strive, struggle, take exception, take on, tangle, vary, war, wrangle