IPA: /pərˈpɛtʃueɪtər/
KK: /pərˈpɛtʃuˌeɪtər/
A person who causes something to continue or be carried on, often referring to a negative action or behavior.
The perpetrator of the crime was identified as a known perpetuator of violence.
Perpetuator → It is formed from "perpetuus" (meaning continuous or everlasting) and "-ator" (a suffix indicating a person who performs an action). The word "perpetuator" refers to a person who causes something to continue or be sustained over time.
Think of someone who makes something 'everlasting' ('perpetuus') — that's why a perpetuator is someone who keeps something going.