こま てる
komarihateru

Ichidan Verb

1. to be at a complete loss; to be without recourse; to be completely stymied; to have absolutely no idea what to do

Intransitive
わたくしはこの難問 なんもん こま てている。
watashiwa kono nammonni komarihatete iru
I'm at my wit's end with this difficult problem.
Other forms: