accept affix altercate anchor annex apologetics apologia apology argument argumentation assume attach attack attempt barney begin belay bicker bickering blast away blast off brawl broil buckle to casuistry cement cinch clamp clinch commence contention controversy cramp defense differ disputation dispute dive in dive into dustup embark embark in embark upon endeavor engage in engraft enter enter on enter upon fall into fall to fasten feud fight fix flite flyting get busy get cracking get going get off get to get under way get with it go about go ahead go at go in for go into go to it go upon graft grapple hassle have at have words head into hop to it hubbub join issue jump off jump to it kick off knit knock-down-and-drag-out launch launch forth launch into lay about light into litigation logomachy make fast moor move into open paper war passage of arms pitch in pitch into plunge into polemic polemics proceed to put to quarrel rhubarb row ruckus ruction rumpus run-in sail into scrap screw up secure send off set set about set at set forward set going set in set out set sail set to work shindy spar spat squabble start start in start off start out tackle take off take on take up tiff tighten trice up trim turn to undertake venture upon verbal engagement wade into war of words wrangle wrangling