treasonable

[tree-zuh-nuh-buhl]

adjective

1. of the nature of treason.

2. involving treason; traitorous.

Other Word Forms

• treasonably adverb
• nontreasonable adjective
• nontreasonableness noun
• nontreasonably adverb
• untreasonable adjective

Word History and Origins

Origin of treasonable¹

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

Example Sentences

Amid this crackdown, army chief Christopher Musa warned that it is a "treasonable offence" to fly the flags of foreign countries.

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“To me, those acts are treasonable,” Solensten said of the Bidens.

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All five have been charged with being suspected members of a terrorist group and planning “highly treasonable” acts against the government, it said.

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

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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."

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