Treasonable
Pronunciation : Trea"son*a*ble
Part of Speech : a.
Definition : Defn: Pertaining to treason; consisting of treason; involving the crime of treason, or partaking of its guilt. Most men's heads had been intoxicated with imaginations of plots and treasonable practices. Clarendon.
Syn. -- Treacherous; traitorous; perfidious; insidious. -- Trea"son*a*ble*ness, n. -- Trea"son*a*bly, adv.
Source : Webster's Unabridged Dictionary, 1913