if worst comes to worst
idiomPart ofworst
if worst comes to worst — idiom
1. if the most unpleasant or difficult thing that could happen actually does happen
1.idiom
Definition
if the most unpleasant or difficult thing that could happen actually does happen.
Example
If worst comes to worst, we can sleep in the car until the garage opens in the morning.
She kept a spare key with a neighbour in case worst came to worst.