( especially BrE ) ( NAmE usually will·ful ) / ˈwɪlfl; NAmE / adjective ( disapproving )
1.
[ usually before noun ] ( of a bad or harmful action ) done deliberately, although the person doing it knows that it is wrong :
wilful damage
2.
determined to do what you want; not caring about what other people want
SYN headstrong :
a wilful child
► wil·ful·ly / -fəli; NAmE / adverb
► wil·ful·ness noun [ U ]
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WORD ORIGIN
Middle English : from the noun will + -ful .