This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. The state or condition of being wilful; stubbornness.

n. The character of being wilful; determination to have one's own way; self-will; obstinacy; stubbornness; perverseness.

n. Intention; the character of being done by design.

n. the trait of being prone to disobedience and lack of discipline

"I insisted upon obedience, even when my commands came in collision with her conscientious scruples; and she was firm; she had the spirit of a martyr -- and I was very severe in my efforts to subdue what I called wilfulness and obstinacy, "said the distracted father in a voice often, scarcely audible from emotion."

intractableness    intractability   

perverseness    wildness    perversity    contrariness   

willfulness   

perverseness    self-will    improvidence    willfulness    imprudence