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.
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
There was nothing unusual, let alone treasonable, in this.
From Washington Post ● Mar. 10, 2017
Only ten years after the passage and ratification of the Constitution, however, what were treasonable or seditious acts remained blurry and more problematic judgments without the historical sanction that only experience could provide.
From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
