dim-witted russian

• недалёкий

  not far, near, close by, short (of a distance)

  near, not distant, immediate

  dim-witted, narrow-minded, dull, not very bright

• проби́тый

  pierced, punctured, punched, broken through

  nuts, crazy, out of one's mind, dim-witted

• скудоу́мный

  feeble-minded, dull-witted, dim-witted, of limited intelligence

  unimaginative, lacking ideas, uninspired