Traitor
/trˈeɪtər/
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Definition
(noun) Someone who violates an allegiance and betrays their country; someone guilty of treason; one who, in breach of trust, delivers their country to an enemy, or yields up any fort or place entrusted to their defense, or surrenders an army or body of troops to the enemy, unless when vanquished.
Sentence Examples
We have a traitor among us.
The soldiers turned traitor.
CEFR Practice Quiz
The man was accused of being a ____ because he had supposedly leaked several important secrets to a rival group today.