Persist的同源词
* subsist
v.〔以很少的食物或钱〕维持生活，生存下去
We had to subsist on bread and water.
我们不得不靠少量的面包和水维持生存。
* destitute
a. 一无所有的，贫困的
The floods left many people destitute.
这场洪水使许多人变得一无所有。

* insist
v. 坚持或坚决要求（某事物）
"You really must go!" "All right, if you insist."
“你真得走了！” “好吧，你一定要我走，我就走。”
I insist that you take immediate action to put this right.
我坚决要求你立刻采取行动把事情处理好。
Mike insisted that his wife was wrong.
麦克坚持认为他的老婆是错的。
* insistent
a. 坚持的，坚决要求的
She was insistent that they should all meet for dinner.
她坚持要大家聚在一起吃晚饭。
They were insistent on good manners.
他们坚持要举止文雅。