at one's wit's end meaning
see under wit1
[American idiom]
at the limits of one's mental resources.
• I’m at my wit's end with this problem. I cannot figure it out.
• Tom could do no more. He was at his wit's end.
[American slang]
Fig. at the limits of one's mental resources.
I'm at my wit's end with this problem. I cannot figure it out.
Tom could do no more. He was at his wit's end.
