Related formstrea·son·ous·ly, adverb
Examples from the Web for treasonous
A special military tribunal had found him guilty of treasonous activities and other crimes.North Korean Blood Feud is ‘Richard III’ with Nukes|Gordon G. Chang|December 13, 2013|DAILY BEAST
It goes on to say that a court needs two witnesses to the treasonous act.‘A Ghastly Waste of Time?’ Considering the Constitution|Seth Lipsky|January 15, 2013|DAILY BEAST
Some of the same folks who called BDS treasonous see ODS as part of a patriotic resistance.
For Perry to say we can't control the Mexican border, he declared, is "pretty much a treasonous comment."
People who study the right have worried for months about the consequences of paranoid beliefs about treasonous government plots.
A treasonous tempest rises, and you stand A god indifferent when you should bethink Yourself most mortal.The Mortal Gods and Other Plays|Olive Tilford Dargan
But he has no right to involve you in these treasonous tricks of his.Angelot|Eleanor Price
It secured me his confidence—while strengthening his treasonous intention.The Bandolero|Mayne Reid
It is not possible; it would not be wise; it would be treasonous to the General Woo-san-Kwei.The War Tiger|Wiliam Dalton
Hadst thou been concerned in treasonous undertakings the matter would be plain.In Doublet and Hose|Lucy Foster Madison