wilful
adjective (especially British English)(North American English usually willful)
(disapproving)- [usually before noun] (formal, disapproving or
law 法律 (of a bad or harmful action 不友好或有害行爲 done deliberately, although the person doing it knows that it is wrong 故意的；有意的；成心的 wilful damage 蓄意破壞 The report concluded that her death was a result of wilful neglect. 報告的結論是，她的死亡是故意忽視的結果。
determined to do what you want; not caring about what other people want 任性的；固執的；倔強的 a wilful child 任性的孩子
Word OriginMiddle English: from the noun will + -ful.