be at your wits' endWORRIEDto be very upset and not know what to do, because you have tried everything possible to solve a problem 智穷计尽,束手无策be at your wits’ end• I'm at my wits' end trying to fix this computer.• I don't know what I can do to keep our marriage together -- I'm at my wits' end!• It was two days before the baby was due, and Robert was at his wit's end.
→ be at your wits’ end at wit(5)