Synonyms of 'defector'
Turkey granted asylum to defectors from Communist countries.
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An apostate is someone who has abandoned their religious faith, political loyalties, or principles.
He was an early apostate, leaving the party last year.
A deserter is someone who leaves their job in the armed forces without permission.
He was a deserter from the army.
A renegade is a person who abandons the religious, political, or philosophical beliefs that he or she used to have, and accepts opposing or different beliefs.
He was a renegade - a traitor.
Thesaurus for defector from the Collins English Thesaurus
A defector is someone who leaves their country, political party , or other group, and joins an opposing country, party, or group.