真是不知足英语怎么说

不知足可以用英文表达为 "contentment". 来源是源于拉丁文 "contentus"，意为"满足"。
一些英文例句及其中文翻译如下：
She struggled to find contentment in her life. 她努力寻找生活中的满足。
He finally achieved contentment after years of hard work. 经过多年的努力，他终于找到了满足。
Contentment is a state of happiness and satisfaction. 满足是一种幸福和满意的状态。