if worst comes to worst
US /ɪf wɜrst kʌmz tu wɜrst/
UK /ɪf wɜrst kʌmz tu wɜrst/
1.
if the worst possible thing happens
:
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If worst comes to worst, we can always stay at a hotel.
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I hope it doesn't come to that, but if worst comes to worst, I'll sell my car.