in the unlikely event (that) (something) happens
If a very improbable outcome turns out to be the case. I wouldn't worry too much, but in the unlikely event that you lose your job, you can always come live with us for a while. In the unlikely event I win the lottery, the first thing I would do is travel to Jamaica. I decided to go to the box office anyway, in the unlikely event that I could still get tickets to tonight's show.
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.