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high treason

American  

noun

  1. treason against the sovereign or state.


high treason British  

noun

  1. an act of treason directly affecting a sovereign or state

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of high treason

Middle English word dating back to 1350–1400

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Copenhagen dismissed and charged Kauffmann with high treason, which he ignored.

From The Wall Street Journal • Apr. 11, 2026

He also noted the "absence of the death penalty" even though Burkina Faso recently reinstated it for crimes of high treason.

From Barron's • Jan. 20, 2026

Saudi Arabia branded him a “fugitive,” while the Yemeni government accused him of high treason.

From Los Angeles Times • Jan. 20, 2026

On Friday, the government accused Kabila, 53, of high treason and ordered the seizure of all his property.

From BBC • Apr. 20, 2025

“Let us move along, my lords. We have two queens to try for high treason, you may recall. My niece has elected trial by battle, she informs me. Ser Robert Strong will champion her.”

From "A Dance with Dragons" by George R. R. Martin

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