willful
词根词缀：
armful n. 一抱
arm 手臂 + ful 充满时的量 → 一抱
boatful n. 一船
boat 小船 + ful 充满时的量 → 一船
dishful n. 一碟
dish 盘 + ful 充满时的量 → 一碟
handful n. 一把
hand 手 + ful 充满时的量 → 一把
mouthful n. 一口
mouth 口 + ful 充满时的量 → 一口
spoonful n. 一勺
spoon 匙 + ful 充满时的量 → 一勺
数据来源：新东方英语词汇速记大全
相关例句：
Willful ignorance is surrendering control.
被蒙在鼓里等于交出了控制权。
Willful refusal to appear before a court or comply with a court order.
故意的拒绝在一个法庭之前出现或者遵循法庭秩序。
We must resolve disputes through dialogue and negotiation and oppose willful use or threat of force.
坚持通过对话和谈判解决争端，反对动辄使用武力或以武力相威胁。
She also noted that WaMu was attempting to shield the executives from any responsibility for "willful misconduct and gross negligence," which she said was too extensive.
她也注意到华盛顿互惠银行企图避开高管任何的“故意的渎职和重大过失”，她表示这是太过广泛的。
Willful wanton and malicious destruction of the property of others.
故意且恶意地破坏他人财产的行径。
A high-value person is willful, powerful, and moral.
高价值的人坚持己见、有影响力、有道德感。