1. Disloyal (a) /ˌdɪsˈlɔɪ.əl/: not supporting someone that you should support -không trung thành
Example: His sisters thought that his autobiography was disloyal to the family.
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2. Betray (v) /bɪˈtreɪ/: to not be loyal to your country or a person, often by doing something harmful such as helping their enemies- phản bội
Example: He promised never to betray his wife (= never to leave her for another person).
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3. Traitorous (a) /ˈtreɪ.tər.əs/: not loyal to your own country, social group, beliefs, etc. - không trung thành
Example: It was a traitorous thought, and she tried to reject it.
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4. Traitor (n) /ˈtreɪ·t̬ər/: a person who gives away or sells secrets of his or her country, or someone who is not loyal to particular beliefs or friends
Example: Benedict Arnold was a traitor during the American Revolution.
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