to feel sorry about something you have done or about something that you have not been able to do. regret something If you don't do it now, you'll only regret it. The decision could be one he lives to regret. I soon came to regret my action. ‘I've had a wonderful life,’ she said, ‘I don't regret a thing.’. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.