treasonous

from WordNet (r) 3.0 (2006)

treasonous
    adj 1: having the character of, or characteristic of, a traitor;
           "the faithless Benedict Arnold"; "a lying traitorous
           insurrectionist" [syn: {faithless}, {traitorous},
           {unfaithful}, {treasonable}, {treasonous}]

from The Collaborative International Dictionary of English v.0.48

Treasonous \Trea"son*ous\, a.
   Treasonable. --Shak.
   [1913 Webster]

         The treasonous book of the Court of King James.
                                                  --Pepys.
   [1913 Webster]

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