The Collaborative International Dictionary of English v.0.48:
Intractability \In*tract`a*bil"i*ty\, n. The quality of being intractable; intractableness. --Bp. Hurd. [1913 Webster]WordNet (r) 3.0 (2006):
intractability n 1: the trait of being hard to influence or control [syn: intractability, intractableness] [ant: flexibility, tractability, tractableness]