Lewis Short
(adj.adv.) : săgax, ācis, adj.sagio; cf. salax, from salio
* Of quick perception, whose senses are acute, sagacious (class.).
* Lit.
* Chiefly of the acute sense of smelling in dogs, keen-scented: sagax Nasum habet,Plaut. Curc. 1, 2, 17: canes,Cic. Div. 1, 31, 65; Ov. M. 3, 207: catulus,id. R. Am. 201. —With gen.: naris sagax,Luc. 7, 829.— Poet.: virtus venandi,Ov. Hal. 76.
* Trop., intellectually quick, keen, acute, shrewd, sagacious (syn.: sollers, perspicax, acutus, subtilis).
* Absol.: (homo) animal hoc providum, sagax, multiplex, acutum, memor, plenum rationis et consilii,Cic. Leg. 1, 7, 22; cf. id. Fin. 2, 14, 45: mens,id. Tusc. 5, 23, 67; Lucr. 5, 420; 1, 1021: animus,id. 2, 840; 4, 913: ratio,id. 1, 131; 1, 369: homo sagax et astutus,Mart. 12, 87, 4: modo circumspectus et sagax, modo inconsultus ac praeceps,considerate,Suet. Claud. 15: mire sagaces fallere hospites,Hor. C. 2, 5, 22: curae,id. ib. 4, 4, 75.—Of a soothsayer, knowing the future, Ov. M. 8, 316.
* Ad aliquid (class.): ad suspicandum sagacissimus,Cic. Cat. 1, 8, 19: ad haec pericula perspicienda, Plancus ap. Cic. Fam. 10, 23, 4.
* With gen. (poet. and in post-Aug. prose): utilium sagax rerum et divina futuri,Hor. A. P. 218: fibrarum et pennae divinarumque flammarum,skilled in,Sil. 3, 344; cf. in sup.: prodigiorum (Joseph),Just. 36, 2, 8; and: rerum naturae, Col. praef., § 22 (with non ignarus).
* With in or simple abl. (post-Aug.): vir in conjecturis sagacissimus,Just. 1, 9, 14: civitas rimandis offensis sagax,Tac. H. 4, 11.—(ρ) Inf.: sagax quondam ventura videre,Ov. M. 5, 146.—Hence, adv.: să-gācĭter.
* Quickly, sharply, keenly, with quickness of scent, with a fine sense of smell: canes si advenientem sagaciter odorantur,Col. 7, 12, 7.—Comp., Cic. Att. 6, 4, 3: vultures sagacius odorantur,Plin. 10, 69, 88, § 191; Hor. Epod. 12, 4.—Sup., Cic. de Or. 2, 44, 186; Plin. 11, 37, 50, § 137.
* Trop., acutely, shrewdly, accurately, sagaciously: sagaciter pervestigare,Cic. de Or. 1, 51, 223: intueri,Quint. 2, 8, 4; Liv. 27, 28: perspicere naturam alicujus,Suet. Tib. 57 al.
Charlton T. Lewis, Charles Short, A Latin Dictionary