Following are a number of back-translations as well as a sample translation for translators of Psalm 64:8:

• Chichewa Contempary Chichewa translation, 2002/2016:
  “He will change their lips to oppose them
  and turn them into a wasteland;
  all who will see them will shake their heads in mocking them.” (Source: Mawu a Mulungu mu Chichewa Chalero Back Translation)
• Newari:
  “They will be ruined by their own talk.
  All who see them will shake their heads and go.” (Source: Newari Back Translation)
• Hiligaynon:
  “God will-destroy them because of what they speak/talk-about.
  All who can-see them will-shake-(their)-heads-right-and-left to-mock them.” (Source: Hiligaynon Back Translation)
• Laarim:
  “He will judge them by their words,
  then he will bring them to destruction,
  then people who see them, will shake their heads with trembling.” (Source: Laarim Back Translation)
• Nyakyusa-Ngonde (back-translation into Swahili):
  “Atawangamiza kwa sababu ya maneno yao,
  wote ambao watakuwa wanawaona, watawacheka.” (Source: Nyakyusa Back Translation)
• English:
  “Because of what they say, he will get rid of them,
  and then everyone who sees what has happened to them will shake their heads to ridicule them.” (Source: Translation for Translators)