foul up
Mittelstufe (B1) informal
Make a big, serious mistake that ruins or confuses something.
"Someone fouled up the bookings and now there aren't enough rooms for everyone."
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Lamar Peters vs Zae 1v1… Clash Of The TITANS | Judgment Day
Off The Dribble · 16:56
They're calling the foul up top.
Vector Search with LLMs - Computerphile
Computerphile · 6:43
If if I ask you a question, but I foul up my sentence,