1. bring about or initiate (an action or event): "they instigated a reign of terror"Similarset in motionput in motionget under wayget goingget off the groundget in operationstartbegininitiatelaunchinstitutelay the foundations oflay the first stone ofsow the seeds ofset upinauguratefoundestablishput in placeorganizeget workingget functioningactivatetrigger offset offspark offinspirefomentkindlestir upwhip upactuategeneratecausebring aboutstart/get/set the ball rollinginformal:kick offformal:commenceOppositehalt
Word Originmid 16th century (in the sense ‘urge on’): from Latin instigat- ‘urged, incited’, from the verb instigare, from in- ‘towards’ + stigare ‘prick, incite’.