regretnoun [C or U]uk us /rɪˈɡret/
regretverb [T]uk us /rɪˈɡret/ (-tt-)
- Come Monday morning you'll regret staying up all night.
- I greatly regret not having told the truth.
- Please don't get mixed up with him. You'll regret it if you do.
- I regret any anxiety or concern which I may, unwittingly, have caused.
- After careful consideration of your proposal, I regret to say that we are unable to accept it.