in-tractābĭlis, e, adj., not to be handled or meddled with, unmanageable, intractable; rough, rude, wild, fierce (since the Aug. per.): genus intractabile bello, Verg. A. 1, 339; cf. in comp.: homo naturā intractabilior et morosior, Gell. 18, 7, 1.
Of inanim. and abstr. things: pastinacae virus intractabile est, Plin. 19, 5, 27, § 89: loca frigore, uninhabitable, Just. 24, 4: intractabilis et dura aetas, Sen. Ep. 25, 1: bruma, Verg. G. 1, 211: ira, Grat. Cyn. 159.