思し案あんに余あまる

expression, godan verb (-ru)

be at one's wit's end; be at a loss what to do

Used when one has thought hard but still cannot find a solution or make a decision. Often implies a difficult problem or dilemma.

• どうすればいいか思し案あんに余あまっている。

  I'm at my wit's end about what to do.

• 彼かれはその難なん問もんに思し案あんに余あまった。

  He was at a loss over that difficult problem.