Meaning of “treason” in the English Dictionary

british dictionary

"treason" in British English

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treasonnoun [ U ]

uk /ˈtriː.zən/ us /ˈtriː.zən/

(the crime of) showing no loyalty to your country, especially by helping its enemies or trying to defeat its government:

In 1606 Guy Fawkes was executed for treason.

(Definition of “treason” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"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)