Lewis Short
(adjective) : in-tractābĭlis, e
* 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.
Charlton T. Lewis, Charles Short, A Latin Dictionary