1. 懊悔，后悔
2. 抱歉
3. 抱憾，遗憾
4. 思念，怀念，想念
5. 痛惜，惋惜
6. 悼念，哀悼
7. 悔恨，追悔
8. 以（不能...）为憾
9. 懊恼，恼恨
10. 抱怨
11. 为...感到难过
12. 为...抱歉
13. 因失去…而惆怅

1. 遗憾
2. 悔恨，后悔，懊悔
3. 抱歉，歉意
4. 哀悼
5. 惋惜，痛惜，悲叹
6. 表示谢绝的短柬
7. 懊恼，懊丧
8. 失望

1. vt. & vi. 懊悔,惋惜,遗憾 feel sorry about (a sad fact or event, a mistake one has made, etc.), and wish it had not happened or was not true

1. [U][C]痛惜,懊悔,遗憾,失望,悔恨 feeling of sadness at the loss of sb/sth; feeling of annoyance, disappointment or repentance

1. sadness associated with some wrong done or some disappointment;

   "he drank to drown his sorrows"
   "he wrote a note expressing his regret"
   "to his rue, the error cost him the game"
   

1. feel remorse for; feel sorry for; be contrite about

2. feel sad about the loss or absence of

3. decline formally or politely;

   "I regret I can't come to the party"
   

4. express with regret;

   "I regret to say that you did not gain admission to Harvard"
   

1.对…感到后悔;因…遗憾
If youregret something that you have done, you wish that you had not done it.

e.g. I simply gave in to him, and I've regretted it ever since...
我就向他屈服了，从那以后我一直后悔。
e.g. Ellis seemed to be regretting that he had asked the question...
埃利斯好像后悔问了这个问题。

2.悔恨;失望;后悔;惋惜
regret is a feeling of sadness or disappointment, which is caused by something that has happened or something that you have done or not done.

e.g. My greatregret in life is that I didn't bring home the America's Cup...
我这辈子最大的遗憾就是没有把美洲杯捧回家。
e.g. Lillee said he had no regrets about retiring.
利里说他没后悔退休。

3.为…抱歉;很遗憾地说/通知你
You can say that youregret something as a polite way of saying that you are sorry about it. You use expressions such asI regret to say orI regret to inform you to show that you are sorry about something.

e.g. 'I very muchregret the injuries he sustained,' he said...
“我对他的受伤感到很遗憾，”他说。
e.g. Iregret that the United States has added its voice to such protests...
我很遗憾美国也加入了这一抗议的行列。

4.抱歉；遗憾
If someone expressesregret about something, they say that they are sorry about it.

e.g. He expressed greatregret and said that surgeons would attempt to reverse the operation...
他深表歉意，说外科医生会努力消除手术造成的损伤。
e.g. She has accepted his resignation withregret.
她遗憾地接受了他的辞职。