01 n. The offense of attempting to overthrow the government of the state to which the offender owes allegiance, or of betraying the state into th…
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1.
The offense of attempting to overthrow the government of the state to which the offender owes allegiance, or of betraying the state into the hands of a foreign power; disloyalty; treachery.“The treason of the murthering in the bed.” — Chaucer.
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2.
Loosely, the betrayal of any trust or confidence; treachery; perfidy.“If he be false, she shall his treason see.” — Chaucer.
Phrases & compounds
Petit treason —
See under Petit.