SHESHACH (shē’shăk, Heb. shēshakh). In the opinion of many, a cryptogram from “Babel” formed by reversing the letters of the alphabet. When the prophet first used this device (Jer.25.26), it was the first year of Nebuchadnezzar, and it would have been folly openly to predict the doom of Babylon. When he later used it (Jer.51.41), Israel was in captivity, Jerusalem had long been in ruins, and the use of the word with its explanation as Babylon could do no harm.