Lewis Short
(adjective) : călumnĭōsus, a, um, calumnia
* Full of tricks or artifices, swindling (postAug.): calumniosus est, qui sciens prudensque per fraudem negotium alicui comparat,Paul. Sent. 1, 5, 1; 1, 5, 2: accusatio,Dig. 38, 2, 14: criminationes,Arn. 1 init.— Sup., Aug. Ep. 152 fin.
* Subst.: că-lumnĭōsus, i, m., a person convicted of false information, Dig. 48, 16, 3; cf. calumnia, I. B. 4.—Adv.: călumnĭōsē, artfully, by trickery, Dig. 46, 5, 7; Aug. Ep. 48. —Sup., Symm. Ep. 10, 76.
Charlton T. Lewis, Charles Short, A Latin Dictionary