treasonable

there was no evidence of treasonable activity.

a treasonable act such as espionage.

7) Abrogate treasonable treaties;

being accused of treasonable behavior

charged with treasonable activities

Ukraine's president said he wants to make corruption during wartime a treasonable offense.

To their narrow minds, American opinion was contemptible and American resistance unlawful, riotous, and treasonable.

Anything that you should do in the way of giving her aid and comfort will be—permit me the expression—distinctly treasonable.

They inflicted a heavy blow on the British at Monmouth, but the treasonable conduct of General Charles Lee prevented a triumph.

To McKinley and his supporters, engaged in a sanguinary struggle to maintain American supremacy, such talk was more than quixotic;it was scarcely short of treasonable.

A Disappointment Mr. Attorney-General had to inform the jury, that the prisoner before them, though young in years, was old in the treasonable practices which claimed the forfeit of his life.