a. [f. as prec. + -OUS.] Full of or abounding in treason; characterized by treason or treachery; treasonable.
c. 1450. [implied in TREASONOUSLY].
1593. Nashe, Christ’s T., Wks. (Grosart), IV. 196. Bannings, cursings, secrete murmurings, out-rage, murder, iniustice, all which are high treasonous trespasses against God.
1605. Shaks., Macb., II. iii. 138. Against the vndivulg’d pretence, I fight Of Treasonous Mallice.
1784. New Spectator, No. 18. 3. To prohibit such and such pieces, that were blasphemous, libellous, or treasonous.
1875. W. Warburton, Edw. III., i. 21. That he had trepanned the Earl of Kent into a treasonous conspiracy.
Hence Treasonously adv., in a treasonous manner.
c. 1450. Mirour Saluacioun, 2757. And Jhū crist with Judas kissis he tresovnously.
1821. Milman, Fortune, 181. Steep treasonously in great Pompey’s gore.
