IPA: /ˈvɪk.tɪ.maɪ.zər/
KK: /ˈvɪktɪmaɪzər/
A person who causes harm or suffering to others, often by taking advantage of them.
The bully was a victimizer who targeted weaker students.
Victimizer → It is formed from "victima" (from Latin, meaning a living being sacrificed) and "-izer" (a suffix used to indicate someone who performs an action). The word "victimizer" refers to someone who causes harm or victimizes another person.
Think of a 'victim' being harmed and the '-izer' indicating someone who does that action — a victimizer is someone who makes another a victim.