perpetrator

[ pur-pi-trey-ter ]
/ ˈpɜr pɪˌtreɪ tər /

noun

a person who perpetrates, or commits, an illegal, criminal, or evil act: The perpetrators of this heinous crime must be found and punished to the fullest extent of the law.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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