Following are a number of back-translations as well as a sample translation for translators of Proverbs 17:27:

• Kupsabiny: “The words of a wise person are prepared/considered
  and an understanding person is gentle/friendly.” (Source: Kupsabiny Back Translation)
• Newari: “Those who are wise do not talk too much,
  People with insight do not get angry.” (Source: Newari Back Translation)
• Hiligaynon: “A wise man and has understanding is not talkative/great-talker and is does- not -act-quickly.” (Source: Hiligaynon Back Translation)
• Kankanaey: “A person who is able-to-restrain his anger and speaks circumspectly/carefully is wise.” (Source: Kankanaey Back Translation)
• English: “Those who have good sense do not talk a lot,
  and those who control their tempers/keep themselves from becoming very angry are truly wise.” (Source: Translation for Translators)