Word Study
treasonable
CIDE DICTIONARY
treasonable, a.
Pertaining to treason; consisting of treason; involving the crime of treason, or partaking of its guilt. [1913 Webster]
"Most men's heads had been intoxicated with imaginations of plots and treasonable practices." [1913 Webster]
Syn. -- Treacherous; traitorous; perfidious; insidious.
THESAURUS
treasonable
Judas-like, Trojan-horse, apostate, betraying, breakaway, collaborative, degenerate, disloyal, double-crossing, extreme, extremistic, factious, faithless, fifth-column, insurgent, insurrectionary, mutineering, mutinous, quisling, quislingistic, rebel, rebellious, recreant, renegade, revolutional, revolutionary, riotous, seditionary, seditious, subversive, tergiversant, tergiversating, traitorous, treasonous, turbulent, turncoat, two-timingFor further exploring for "treasonable" in Webster Dictionary Online