Malfeasor is a term used to describe a person who commits an illegal or wrongful act and is usually associated with criminal behavior. There are several synonyms for this word, including wrongdoer, offender, culprit, delinquent, criminal, and lawbreaker. Each of these words implies that the person has done something wrong and has violated the law. However, some of these words may have a specific connotation. For example, a delinquent is often used to describe a juvenile who violates the law, while a criminal may refer to a person who has been convicted of a crime. Ultimately, all of these words serve as alternatives to malfeasor and are used to describe someone who has done something unlawful or inappropriate.