vengeful
词根词缀：
avenge v. 报仇
a 加强 + venge 惩罚，引申为“报仇” → 报仇
avenger n. 报仇者
aveng〔e〕报仇 + er 表名词 → 报仇者
revenge v. 报仇
re 回 + venge 惩罚，引申为“报仇” → 返回来惩罚 → 报仇
vengeance n. 报仇
venge 惩罚，引申为“报仇” + ance 表状态 → 报仇
vengeful adj. 复仇心重的
venge 惩罚，引申为“报仇” + ful …的 → 充满报仇心的 → 复仇心重的
数据来源：新东方英语词汇速记大全
相关例句：
He was stabbed to death by his vengeful wife
他被图谋报复的妻子拿刀捅死了。
Vengeful officials, he said, have even stymied his efforts to find a job by warning away would-be employers.
他说，官员们怀恨在心，甚至警告有意向的雇主不要聘用他，让他找不到工作。
He knows she's "harboring vengeful thoughts."
他知道她有报复的想法
He did not think he was any more cruel, any more vengeful than other men.
他认为自己并不比其他人更冷酷，也不比别人更爱报复。
The Christian god is a three headed monster, cruel, vengeful and capricious.
基督教的神是三个头的恶魔，残忍、报复心重、反复无常。
Freddy Krueger plays the vengeful monster who kills by slicing, dicing and chopping people who had murdered him.
弗雷迪·克鲁格扮演一个复仇的魔鬼，他把那些杀害他的人一一肢解至死。