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Definition traitor in British English

traitor noun

[countable] noun
/ˈtreɪtə(r)/
1

someone who tells secrets about their own country to a country that is its enemy

Example

Adams was a spy, and a traitor to his country.

Synonyms and related words
2

someone who is not loyal to their friends, family, or employer

Synonyms and related words
Definition traitor in British English