Definition of treason
1
: the offense of attempting by overt acts to overthrow the government of the state to which the offender owes allegiance or to kill or personally injure the sovereign or the sovereign's family
2
: the betrayal of a trust : treachery
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Merriam-Webster unabridged
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Time Traveler for treason
The first known use of treason was in the 13th century
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