expression
completely helpless; unable to do anything; at one's wit's end
Idiomatic expression meaning one is utterly powerless or unable to act, often against a superior opponent or overwhelming situation. Literally 'neither hands nor feet can come out'.
相手が強すぎて、手も足も出なかった。
The opponent was so strong that I couldn't do a thing.
難問に手も足も出ない
I'm completely stumped by the difficult problem.