on the off chance of (something)

on the off chance of (something)

In the unlikely event of something happening or being the case. I went to the box office on the off chance of there still being tickets available to tonight's show. I know it's supposed to stay dry tonight, but on the off chance of rain, please put the kids' bikes back in the shed so they don't get rusty.
See also: chance, of, off, on
Farlex Dictionary of Idioms.
See also:
  • leave the door open
  • leave the door open for
  • leave the door open for (something or doing something)
  • take the chance (to do something)
  • take the occasion
  • take the occasion (to do something)
  • take the opportunity (to do something)
  • blessed event
  • have half an eye on (someone or something)
  • have one eye/half an eye on something