agree to disagree antagonize atomize bang bang into battle be antipathetic be at cross-purposes be at variance be inimical beat against box brawl break break off break up broil bump bump into cannon carom carom into clash close combat come into collision come to blows concuss conflict conflict with confront each other confute contend contest contradict contrapose contravene counter counteract counterattack counterpose countervail counterwork crack up crash crash into cross crump crunch cut and thrust dash into differ differ in opinion disaccord disagree dissent duel encounter exchange blows fall aboard fall foul of fence feud fight fight a duel foul fragment give and take give satisfaction go against go counter to grapple grapple with head into hit hit against hold opposite views hurt hurtle impinge interfere with jangle jar jostle joust knock knock against lock horns meet meet head-on militate against mismatch mismate misunderstand one another mix it up negate not get along object oppose oppugn percuss pull different ways pulverize quarrel ram rassle resist riot run a tilt run against run broadside on run counter to run down run in run into sail into scramble scrap scuffle shatter sideswipe skirmish slam into smack into smash smash into smash up spar splinter strike strike against strive struggle swim upstream thrust and parry tilt tourney tussle vary wage war war whomp work against wrestle