Malefactor (noun)

1. A person who has committed a crime or a wrong act.
2. A person who is guilty of a wrongdoing.

Origin:

The word malefactor comes from the latin word "male", meaning bad or evil, and the word "factor", meaning a person who does something.

Examples:

1. The police searched for the malefactor who robbed the bank.
2. The court convicted the malefactor of embezzlement and sentenced him to prison.
3. The malefactor was a notorious thief, known for his cunning and audacity.
4. The detective was determined to catch the malefactor and bring him to justice.
5. The victim identified the malefactor in the lineup, leading to his arrest.