Noun: aggressor u'gre-su(r)
- Someone who attacks another person
"repel the aggressor";
- attacker, assailant, assaulter, assailer
- A confident assertive person who acts as instigator
"In the schoolyard fight, it was clear who the aggressor was"
Derived forms: aggressors
Type of: initiator, instigator, offender, wrongdoer
Encyclopedia: Aggressor