(of something bad) done intentionally or (of a person) determined to do exactly as you want, even if you know it is wrong

The present crisis is the result of years of wilful neglect by the council. 当前的危机是市政会多年来故意忽视的结果。

They eat huge quantities of sweet and fried foods, in wilful disregard of their health. 他们固执地无视自己的健康，吃大量的甜食和油炸食品。

She developed into a wilful, difficult child. 她长成了一个任性而又执拗的孩子。