Lewis Short
(adjective) : vĕtĕrātōrĭus, a, um, veterator, II. A.
* Crafty. cunning, sly (Ciceronian): nihil ab isto tectum, nihil veteratorium exspectaveritis: omnia aperta, omnia perspicua reperientur,Cic. Verr. 2, 1, 54, § 141; so, ratio dicendi,id. Brut. 75, 261.—* Adv.: vĕtĕrātōrĭē, craftily, cunningly, slyly: dicere (with acute),Cic. Or. 28, 99.
Charlton T. Lewis, Charles Short, A Latin Dictionary