Definition of “treason” - English Dictionary

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“treason” in American English

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treasonnoun [ U ]

us /ˈtri·zən/

social studies the crime of helping your country’s enemies or attempting to illegally remove its government:

In 1807, Burr was arrested and tried for treason, but he was acquitted.

(Definition of “treason” from the Cambridge Academic Content Dictionary © Cambridge University Press)