1. a person who betrays their country, cause, or group by helping an enemy

Examples

• The spy was branded a traitor to his homeland.
• She felt like a traitor for revealing the secret.
• Benedict Arnold is remembered as America’s most famous traitor.
• The rebels called him a traitor for supporting the government.
• He was accused of being a traitor to the cause.
• The traitor was sentenced to life in prison.
• Many considered her a traitor for switching political parties.