Following are a number of back-translations as well as a sample translation for translators of Proverbs 14:12:

• Kupsabiny: “A person may think that what he/she is doing is good,
  but that thing may bring death/calamity to him/her.” (Source: Kupsabiny Back Translation)
• Newari: “A path that one thinks is good
  may later lead to the mouth of death.” (Source: Newari Back Translation)
• Hiligaynon: “(It is) possible that you (sing.) think that you (sing.) are on the right path, but in-fact/(surprise particle) the destination/place-to-go of it is death.” (Source: Hiligaynon Back Translation)
• Kankanaey: “There is a path that is as-if good/nice in the sight/viewpoint of people, and the result of it come-to-find-out is death.” (Source: Kankanaey Back Translation)
• English: “There are some kinds of behavior that some people falsely think are right,
  but walking on those roads/continually doing those things causes those people to die.” (Source: Translation for Translators)