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Wilful (adjective)
Intentional; deliberate.
“volitional|voluntary”
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Wilful (adjective)
Stubborn and determined.
“obstinate|self-willed|headstrong|spiteful”
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Willful (adjective)
standard spelling of wilful|from=American spelling
Wiktionary
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Wilful (adjective)
(of a bad or harmful act) intentional; deliberate
“wilful acts of damage”
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Wilful (adjective)
having or showing a stubborn and determined intention to do as one wants, regardless of the consequences
“a spoiled, wilful child”
Oxford Dictionary