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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.

See Examples For:

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

From The Wall Street Journal Apr. 11, 2026

Ryan was tried alongside Azerbaijani citizen Azad Mamedli, who was convicted of high treason and sentenced to 12 years behind bars.

From Barron's Mar. 16, 2026

Unfortunately for the Duke of Buckingham, his 1521 gift of a goblet engraved with the motto "With humble, true heart" did not do the trick, and he was executed the same year for high treason.

From Salon Dec. 23, 2024

There have also been concerns over publicly funding a facility which bears the name of an Irish rebel, executed for high treason.

From BBC Nov. 30, 2024

Had Margaery Tyrell somehow wriggled free of the accusations of fornication, adultery, and high treason?

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

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