Following are a number of back-translations as well as a sample translation for translators of Proverbs 25:14:

• Kupsabiny: “A person who promises something to another and does not give it, is like a cloud or a wind that does not bring rain at all.” (Source: Kupsabiny Back Translation)
• Newari: “A person who promises [but] does not give,
  is like thunder that gives no rain.” (Source: Newari Back Translation)
• Hiligaynon: “A man who does not fulfill his promise is like a dark-cloud and wind which does not bring rain.” (Source: Hiligaynon Back Translation)
• Kankanaey: “The one-who-promises a gift but gives nothing, he is like the (situation of) being-cloudy and being-windy and not raining.” (Source: Kankanaey Back Translation)
• English: “When someone promises to give a gift to us but never gives it,
  that disappoints us as much as clouds and wind that come but do not bring any rain.” (Source: Translation for Translators)