wilful
(US also willful), / ˈwɪlfl; `wɪlfəl/ adj [usu attrib通常作定语]
(derog 贬)
1 (of sth bad) done deliberately; intentional （指坏事）故意做的, 特意的
wilful disobedience, negligence, murder, waste 故意的不服从、 不理会、 杀人、 浪费.
2 (of a person) determined to do as one wishes; headstrong or obstinate （指人）任性的, 倔强的, 固执的
a wilful child 任性的孩子.