rue the day
English
Verb
rue the day (third-person singular simple present rues the day, present participle ruing the day, simple past and past participle rued the day)
- (idiomatic) To seriously regret one's actions.
- 1987, Withnail and I:
- I: I think there may be something living in there. I think there may be something alive.
- Withnail: What d'you mean? A rat?
- I: It's possible. It's possible.
- Withnail: Then the fucker will rue the day!
- 1987, Withnail and I: