Following are a number of back-translations as well as a sample translation for translators of Jeremiah 48:27:

• Kupsabiny: “You (sing.) Moab should think/remember how you insulted/mocked Israel.
  You took/considered them like thieves that are caught
  (you are) shaking your head scorning (them)
  when you speak of that land of Israel.” (Source: Kupsabiny Back Translation)
• Hiligaynon: “You residents of Moab, is (it) not so (that) you (plur.) mocked Israel? Why, was- she -caught in stealing? So, why are- you (plur.) really -shaking-your-head in mocking her?” (Source: Hiligaynon Back Translation)
• English: “You people of Moab ridiculed the people of Israel.
  You treated them as though they were thieves.
  You shook your head at them scornfully and despised them.” (Source: Translation for Translators)