Synonyms for Turn over a new leaf:

• n.

  •reform (noun)
  • Mendes.

• v.

  •reform (verb)
  • swear off,
  • bring up to code,
  • clean up,
  • change one's ways,
  • shape up.

• Other synonyms:

  •
  • change for the better,
  • reform,
  • make resolutions,
  • put the past behind one.
  •refrain
  • abstain.

Antonyms for Turn over a new leaf:

• Other antonyms:

  • n.
    break bad.

• v.

  • reform
    impair, worsen, break, forfeit, kill, waver, abandon, ruin, harm, damage, hurt, injure, destroy.