Definition of turn over a new leaf in English:

turn over a new leaf

Start to act or behave in a better or more responsible way.
More example sentences
  • Avery's response is to turn over a new leaf.
  • A reprieved Dr Rob turns over a new leaf, and places an illustrated lonely hearts ad.
  • Is he turning over a new leaf?
reform, improve, amend;
mend one's ways, become a better person, change completely, make a fresh start, change for the better, reconstruct oneself
informal go straight, get back on the straight and narrow
See parent entry: turn

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Word of the day noisome
Pronunciation: ˈnɔɪs(ə)m
having an extremely offensive smell