- leave well enough alone
- leave (or let) well enough alonerefrain from interfering with or trying to improve something that is satisfactory or adequate as it is
* * *• • •Main Entry: ↑alone————————leave well enough alone (or Brit leave well alone): to stop changing something that is already good enough
He just doesn't know when to leave well enough alone.• • •Main Entry: ↑leave
Useful english dictionary. 2012.