stumped russian

• обру́бленный

  chopped off, cut off, lopped off, stumped

• осе́кшийся

  faltering, stumped, taken aback, confused

  misfired, that has failed to fire

Examples

• Я в тупике.

  I'm stumped.

• Пробле́ма поста́вила Тома в тупик.

  Tom was stumped by the problem.