Perjure oneself refers to the act of lying while under oath or making a false statement in a legal setting. There are several synonyms for perjure oneself including committing perjury, telling a lie, bearing false witness, giving false testimony, making false statements, and swearing falsely. All these terms refer to one deliberately providing false information in a legal setting. It is a serious crime and may result in severe legal consequences. It is essential to understand the gravity of such actions and be truthful in all legal proceedings. To avoid such mistakes, one should remain vigilant to only provide accurate information when under oath.