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Synonyms

treasonable

American  
[tree-zuh-nuh-buhl] / ˈtri zə nə bəl /

adjective

  1. of the nature of treason.

  2. involving treason; traitorous.


Other Word Forms


Etymology

Origin of treasonable

First recorded in 1325–75, treasonable is from the Middle English word tresonabill. See treason, able


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:

Stripping royal titles was something reserved for those who committed near treasonable offenses or no longer considered part of the extended royal clan.

From The Wall Street Journal ● Oct. 31, 2025

By February 1864, Davis despaired: "Public meetings of treasonable character, in the name of state sovereignty, are being held."

From Salon ● Mar. 22, 2020

A clash with authority during Blake's time at Felpham ended when the poet was charged with the assault of soldier John Schofield, and for uttering "seditious and treasonable expressions" against the king.

From The Guardian ● Jul. 17, 2013

The chief or king in the traditional set-up only ever "goes to his village" - it is treasonable to say he has died.

From BBC ● Dec. 14, 2010

The Quaker petitions were therefore not treasonable or out of order.

From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis

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