perpetrator
noun
- person who carries out the active part of an act, whether their identity is known or not
Wiktionary
Pronunciation: /ˈpɜː(ɹ).pɪˌtɹeɪt.ə(ɹ)/
noun
Etymology: From Latin perpetrātor. By surface analysis, perpetrate + -or.
- One who perpetrates; especially, one who commits an offence or crime.
“perpetrator of violence”