instigator
1.she was the instigator of their quarrel.
2.a confident assertive person who acts as instigator.
3.Dakini serves as instigator, inspirer, messenger, even trickster, pushing the tantrika (aspirant) across the barriers to enlightenment.
4.Artest still considers Wallace the instigator and the two met Friday in a game for the first time since the brawl.
