Following are a number of back-translations as well as a sample translation for translators of Proverbs 18:20:

• Kupsabiny: “A person is delivered/saved/given health by his mouth (words)
  and what he says brings life.” (Source: Kupsabiny Back Translation)
• Newari: “By the fruit of the mouth
  people’s stomachs are filled.
  People are satisfied by words
  that come out of the mouth.” (Source: Newari Back Translation)
• Hiligaynon: “You will-harvest the fruit of what you are-saying.” (Source: Hiligaynon Back Translation)
• Kankanaey: “A person harvests all that his words produce (verb form of fruit).” (Source: Kankanaey Back Translation)
• English: “People are happy when they hear others say something that is good,
  like they are happy when they eat food that is good.” (Source: Translation for Translators)