Intractable \In*tract"a*ble\, a. [L. intractabilis: cf. F.
   intraitable, formerly also intractable. See {In-} not, and
   {Tractable}.]
   Not tractable; not easily governed, managed, or directed;
   indisposed to be taught, disciplined, or tamed; violent;
   stubborn; obstinate; refractory; as, an intractable child.

   Syn: Stubborn; perverse; obstinate; refractory; cross;
        unmanageable; unruly; headstrong; violent; ungovernable;
        unteachable. -- {In*tracta*ble*ness}, n. --
        {In*tracta*bly}, adv.
        
[1913 Webster]