betrayer
🇬🇧/bɪˈtreɪə(r)/ 🇺🇸/bɪˈtreɪər/
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34929
a person who is not loyal to their country or to another person, often doing something harmful such as giving information to an enemy: betrayers of the nation's interests.
noun [专属名词] 叛徒;背信者;告密者
My blood and my betrayer. 我的血亲和我的背叛者。