Adjective : an intractable disposition. ,an intractable metal. ,the intractable pain in his leg.    From Dictionary.com. 

Even her stubborn intractableness, her keen and malicious humor, added zest to their relationship.    From Wordnik.com.  [DragonFlight]

Jarrell was contemptuous of the self-consciously clever substitution of fake eccentricity and romance for the real intractableness of experience….    From Wordnik.com.  [Taught by Jarrell] Reference

Perhaps it is a symbol of the intractableness of the debate over replacing the viaduct, but people on both sides of the aisle seem mightily annoyed by this turn of events.    From Wordnik.com.  [Sound Politics: Governor Punts, Editorial Boards Applaud. Voters, what say you?] Reference

It is not much to be wondered at if impatient or disappointed reformers, groaning under the impediments opposed to the most salutary public improvements by the ignorance, the indifference, the intractableness, the perverse obstinacy of a people, and the corrupt combinations of selfish private interests armed with the powerful weapons afforded by free institutions, should at times sigh for a strong hand to bear down all these obstacles, and compel.    From Wordnik.com.  [Representative Government] Reference

On the other hand, while Madame d'Epinay was overwhelming him with caressing phrases, she was at the same moment describing him to Grimm as a master of impertinence and intractableness.    From Wordnik.com.  [Rousseau]

Duke of Orleans -- the gentle conduct of the three young strangers -- were all, in a moment of extravagant folly, passion, and intractableness, forgotten, flung to the winds, when, with a scornful air, he addressed Louis Philippe.    From Wordnik.com.  [Louis Philippe Makers of History Series] Reference

No doubt, the most genuine zeal for the object would find difficulties in the way, of a magnitude to require a great and persevering exertion of power, were they only those opposed by the degraded condition of the people themselves; by the utter carelessness of one part, and the intractableness of another.    From Wordnik.com.  [An Essay on the Evils of Popular Ignorance] Reference

It was from considering the docility of the high-bred Arab horse and intractableness of the quibly, roughly broken prairie or Pampas horse, that Mr. Rarey was led to think over and perfect the system which he has repeatedly explained and illustrated by living examples in his lectures, and very imperfectly explained in his valuable, original, but crude little book.    From Wordnik.com.  [A New Illustrated Edition of J. S. Rarey's Art of Taming Horses With the Substance of the Lectures at the Round House, and Additional Chapters on Horsemanship and Hunting, for the Young and Timid] Reference

The private journals of that day kept at Savannah and Ebenezer, acquaint us, in some measure, with the arduous nature of the commissioners 'labors, and the difficulties they encountered from the want of funds, the intractableness of laborers, the novelty of the attempt, the imperfections of machinery, and the bitter opposition of those who should have sustained and encouraged them.    From Wordnik.com.  [Biographical Memorials of James Oglethorpe]