felonous, fellonous

[Eng. felon: -ous.] Wicked, malicious, perfidious, traitorous, felonious. "A deadly bow and arrow keene, Which forth he sent with felonous despight." Spenser: F. Q., III. 1. 65. *fěl-o-nous-ly, adv . [English felonous ; -ly.] Wickedly, perfidiously, traitorously, feloniously. "They sayd it was falsely and felonously done."-Berners: Froi art ; Chronicle , vol. ii., ch. xciv.