Tra từ regret - Từ điển Oxford Advanced Learner 8th

re·gret [regret regrets regretted regretting] verb, noun BrE [rɪˈɡret] NAmE [rɪˈɡret]
verb (-tt-)
1. to feel sorry about sth you have done or about sth that you have not been able to do
•~ sth If you don't do it now, you'll only regret it.
• The decision could be one he lives to regret.
•‘I've had a wonderful life,’ she said, ‘I don't regret a thing.’
•She regretted the words the moment they were out of her mouth.
•~ doing sth He bitterly regretted ever having mentioned it.
•~ what, how, etc… I deeply regret what I said.
•~ that… I regret that I never got to meet him in person.
2. (formal)used to say in a polite or formal way that you are sorry or sad about a situation
•~ sth The airline regrets any inconvenience.
•~ that… I regret that I am unable to accept your kind invitation.
•~ to do sth We regret to inform you that your application has not been successful.
•it is regretted that… It is to be regretted that so many young people leave school without qualifications.
Verb forms:

Word Origin:
late Middle English: from Old French regreter ‘bewail (the dead)’.

Thesaurus:
regret verb T, I (formal, especially written)
•The airline regrets any inconvenience.
apologize • |especially BrE, formal, spoken beg sb's pardon •
regret/apologize that…
apologize/beg sb's pardon for sth
apologize/beg sb's pardon if…
Regret or beg sb's pardon? Regret is used in writing and in formal announcements, especially on behalf of a company or organization; beg sb's pardon is also formal but it is more personal, used by an individual speaking to another individual.

Example Bank:
•I immediately regretted not asking for his name and address.
•It was a decision she would soon regret.
•Pierre told them some things he later regretted telling.
•She knew that she would live to regret this decision.
•The president said that his country deeply regretted the incident.
•‘I've had a wonderful life,’ she said, ‘I don't regret a thing.’
•If you don't do it now, you'll only regret it.
•It is to be regretted that so many young people leave school without qualifications.
•The decision could be one he lives to regret.

noun uncountable, countable
a feeling of sadness or disappointment that you have because of sth that has happened or sth that you have done or not done
• It is with great regret that I accept your resignation.
• She expressed her regret at the decision.
•a pang/twinge of regret
•I have no regrets about leaving Newcastle (= I do not feel sorry about it).
•What is your greatest regret (= the thing that you are most sorry about doing or not doing)?
•He gave up teaching in 2009, much to the regret of his students.

Word Origin:
late Middle English: from Old French regreter ‘bewail (the dead)’.

Thesaurus:
regret noun
1. U, C
•He gave up teaching in 2007, much to the regret of his students.
disappointment • • sadness • • unhappiness • • grief • |formal sorrow • |literary melancholy •
Opp: satisfaction, Opp: happiness
regret/disappointment/sadness/unhappiness/grief/sorrow/melancholy at/about/over sth
regret/sadness/grief/sorrow for sth
to your regret/disappointment/grief/sorrow
with regret/sorrow/sadness
2. U, C
•She expressed deep regret at the incident.
remorse • • shame • • guilt • |formal, especially religion repentance •
Opp: pride
regret/remorse/shame/guilt at sth
regret/remorse/repentance for sth
feel (no) regret/remorse/shame/guilt

Example Bank:
•Her biggest regret was that she had never had children.
•I have absolutely no regrets about resigning.
•I never learned to play an instrument and that's a matter of some regret.
•It is with deep regret that we announce the death of Mr Fred Fisher.
•She enjoyed living alone, but felt a tiny pang of regret for her mother's cooking.
•She expressed deep regret at the incident.
•She showed no regret about leaving her country.
•She thought of them without regret.
•The police offered no expression of regret at his wrongful arrest.
•To my regret, I lost touch with her years ago.
•my sincere regret at what has happened
•He gave up teaching in 2007, much to the regret of his students.
•James felt a twinge of regret at missing the party.
•What is your greatest regret?