/tə əˈbændən əˈliːdʒəns/ – Phrase
Definition: vi phạm sự chung thủy.
A more thorough explanation: To abandon allegiance refers to the act of renouncing or giving up one’s loyalty or commitment to a particular country or government. It typically involves formally declaring a refusal to be bound by the duties and obligations associated with citizenship or nationality.
Example: The citizen decided to abandon allegiance to their home country and instead pledged loyalty to the new nation they had immigrated to.