treasonable

[ tree-zuh-nuh-buhl ]

adjective

1. of the nature of treason.
2. involving treason; traitorous.

Other Words From

• treason·a·bly adverb
• non·treason·a·ble adjective
• non·treason·a·ble·ness noun
• non·treason·a·bly adverb
• un·treason·a·ble 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

Men nudged their neighbours; some looked frightened and some grinned at the treasonable words.

From Project Gutenberg

Complaint was immediately made to the Parliamentary Committee of Examination that it contained treasonable and scandalous matter.

From Project Gutenberg

In other words, he had cast her horoscope, a proceeding common enough in those days, and one which had no treasonable complexion.

From Project Gutenberg

The caballing for dissolution of the Union, why should that be treasonable?

From Project Gutenberg

For those purposes a treasonable book against the King's right to the Crown was 'divulged.'

From Project Gutenberg