rue the day (that) (something) happened

rue the day (that) (something) happened

To feel bitter regret or remorse that something has happened; to wish that something never came to pass. That no-good, lying cheat! I'll make sure he rues the day he crossed me, if it's the last thing I do! Your dad must be ruing the day he agreed to buy you a car if you got an A in all your classes.See also: happen, rue