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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.
Prosecutors also allege the defendants had prior knowledge of the Col Ma'aji's "treasonable act", but failed to inform authorities.
From BBC ● Apr. 21, 2026
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
After a similar grant, the 1776 constitution of North Carolina warned: "nothing herein contained shall be construed to exempt preachers of treasonable or seditious discourses, from legal trial and punishment."
From Salon ● Jan. 7, 2022
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
More basically, Jefferson simply did not regard his behavior as seditious or treasonable.
From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis
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