When discussing someone who has committed a wrongdoing, there are many synonyms to choose from in place of "guilty person." One commonly used term is "culprit," which suggests a person who is responsible for a crime or offense. Another option is "offender," which refers to someone who has committed a specific violation or transgression. Additionally, the term "perpetrator" implies someone who has carried out a deliberate act of harm or wrongdoing. "Convict" is another option, specifically referring to someone who has been found guilty in a court of law. While each of these terms paints a different picture of the person being discussed, they all convey the same sense of responsibility for committing a wrongful act.