rue the day (that something happened)

rue the day (that something happened)

To curse or bitterly regret a point in time (in which something happened or one did something). I swear to you now, you will rue the day you ever crossed me! Men, if their soldiers advance upon us, we must ensure that they will rue the day!
See also: rue, something
Farlex Dictionary of Idioms.
See also:
  • bad word
  • swear down
  • swear
  • from (one's) point of view
  • swear (that) black is white
  • swear black is white
  • dot
  • at the dot
  • (one's) heart leaps
  • leapt