be at loggerheads

argue bicker break with carp complain differ fall out feud spar squabble tangle wrangle

altercate battle brawl bump caterwaul cavil charge clash collide contend contest disapprove dispute dissent divide embroil fight hassle row scrap spat strive struggle vary war

cross swords find fault get tough with have it out have words lock horns mix it up object to set to take exception take on

agree concur harmonize ignore

approve endorse give in give up keep make peace retreat sanction surrender yield