defector
Definitions
A person who abandons their country or cause in favor of an opposing one.
Someone who leaves a political party, organization, or group to join another.
Examples
The high-ranking defector provided the intelligence agency with classified documents about the regime.
After years of living under a dictatorship, the defector finally found safety in a democratic country.
The government treated the defector with suspicion, fearing he might be a double agent.
Synonyms
deserter turncoat renegade traitor apostate runaway fugitive
Antonyms
loyalist patriot adherent follower supporter devotee stalwart