The property of being headstrong, stubbornness.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "headstrongness" in a sentence
"So are all giddy girls, when it is too late: and what a crest-fallen figure then do the consequences of their self-willed obstinacy and headstrongness compel them to make!"
"Poor little dear! he has indeed a little sort of perverseness and headstrongness, as one may say, in his will: yet he is but a baby, and I hope to manage him pretty well; for he notices all I say, and every look of mine already. —"
"This was the fault of Hampton, and due to his headstrongness, for the guides had protested that they did not know that side of the Châteauguay; but he had ordered them to proceed."