Aggressor

ahd-5
  • noun. One that engages in aggression.
  • The Century Dictionary and Cyclopedia
  • noun. The person who first attacks; one who begins hostilities or makes encroachment; an assailant or invader.
  • the GNU version of the Collaborative International Dictionary of English
  • noun. The person who first attacks or makes an aggression; he who begins hostility or a quarrel; an assailant.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. The person who first attacks or makes an aggression; he who begins hostility or a quarrel; an assailant.
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. someone who attacks
  • noun. a confident assertive person who acts as instigator