will·ful or wil·ful /'wil-fəl/ adj: not accidental: done deliberately or knowingly and often in conscious violation or disregard of the law, duty, or the rights of others
willful injury
a willful violation of a court order
will·ful·ly adv
will·ful·ness n
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.