Petty treason is an archaic legal term referring to the act of a person killing their superior or someone to whom they owe allegiance. This act was considered a serious crime usually punishable by death. While there are no direct synonyms for petty treason, the term could be replaced with words such as treachery, betrayal, mutiny, rebellion, sedition, or insurrection. These words describe actions that involve disloyalty or disobedience to authority figures. Although petty treason is no longer a recognized legal term, it serves as a reminder of the consequences of disloyalty and disobedience in a hierarchical society.