"Felonious conduct" refers to criminal behavior that is intentional and punishable by law. There are numerous synonyms for this term that can be used in legal or formal settings. Some of the common synonyms include illicit behavior, unlawful behavior, criminal activity, illegal conduct, and wrongdoing. In some cases, terms such as misconduct, lawlessness, or delinquency can also be used to describe felonious conduct. Other similar terms include felony, malfeasance, transgression, and misdemeanor. Regardless of the term used, the message conveyed is the same- that the behavior in question is serious, illegal, and punishable by law.