adj. (US willful) 1 (of an action or state) intentional, deliberate (wilful murder; wilful neglect; wilful disobedience). 2 (of a person) obstinate, headstrong. wilfully adv. wilfulness n.
[ ME f. WILL(2) + -FUL ]
WILFUL
Meaning of WILFUL in English
Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012