wil·ful British EnglishBrE, willful American English /ˈwɪlfəl/ adjectiveadj 1 STUBBORNcontinuing to do what you want, even after you have been told to stop – used to show disapproval 任性的;固执的〔含贬义〕 2. wilful damage/disobedience/exaggeration etc DELIBERATELYdeliberate damage etc, when you know that what you are doing is wrong 故意损害/违抗/夸大其词等 —wilfully adverbadv
—wilfulness noun [uncountableU]