后悔的英文：
regret
repent

参考例句：

Short acquaintance brings repentance.
浅交生后悔。

Marry in haste and repent at leisure.
草率成婚后悔多。

put on a semblance of penitence
假装后悔的样子

Feeling regret and sorrow for one's sins or offenses;penitent.
后悔的为其罪孽或过错而感到后悔或悲痛的;悔罪的

The vagabond began to regret his waste of time.
这个浪荡子开始后悔他虚度了光阴。

You will live to rue the loss of such a good opportunity.
对失去这么好的一次机会你将来总有一天会后悔的。

It is said that Ctrl Z Day is popular in North America in recent years.
据说世界后悔日最近几年在北美比较流行。

Have a care what you say or you may regret it.
当心你说的话，否则你可能会后悔的。

A man is no told until regrets take the place of dreams. ——John Barrymore
直到后悔取代了梦想，一个人才算老。——巴里莫尔

By the time they reached home she was contrite and spiritless
他们到家的时候，她心里一个劲儿地后悔难过，老打不起精神来。

regret是什么意思：
n. 遗憾，后悔
v. 为...感到遗憾；表示抱歉

regret rushed decisions
对贸然做出的决定感到懊悔

It is the order of nature, and regret is useless.
这是自然的法则，悲叹惋惜是无用的。

I regret my mistake.
我为自己所犯错误感到懊悔。

He felt a flicker of regret.
他突然闪现一丝悔意。

He regretted his roughness.
他对自己的粗鲁感到后悔。

repent是什么意思：
v. 对感到懊悔或忏悔

In repentance, there is salvation.
苦海无边，回头是岸。

From confession flows repentance and from repentance forgiveness.

Never too late to repent
过则勿惮改

Short acquaintance brings repentance.
浅交生后悔。

Depend on others and you always repent
依靠别人总要后悔