what's done cannot be undone

what is done cannot be undone

You cannot reverse, change, or take back that which has already happened. This is a delicate situation, so you can't act impulsively. Keep in mind that what is done cannot be undone.
See also: cannot, done, undone, what

what's done cannot be undone

You cannot change what has already happened or come to pass, so there's no use worrying or stressing about it; what's done is done. I know this isn't the outcome we wanted, but what's done cannot be undone, so let's just try to make the most of a bad situation. I'm really disappointed in what you did, but what's done cannot be undone—let's just forget about it now.
See also: cannot, done, undone
Farlex Dictionary of Idioms.

What's done cannot be undone.

Prov. You cannot change what has already happened. Jill: I wish I hadn't insulted Maria. Jane: What's done cannot be undone. Jill soon regretted telling Mike that she loved him, but she knew that what's done cannot be undone.
See also: cannot, done, undone
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • undone
  • what is done cannot be undone
  • go off at half-cock
  • go off at half-cock/half-cocked, to
  • go off half-cocked
  • go snaky
  • turning point
  • reverse gears
  • snaky
  • drive (one) snaky
References in periodicals archive
What's done cannot be undone but what's not done can be avoided if only the people and Parliament have the courage to do it as more and more facts become known.
Not will of people, more confusion; Letters
His parents know what's done cannot be undone. Understandably, they wish to see justice done and the lorry driver prosecuted.
Grieving parents deserve better
After saying that Banquo is dead and cannot come out of his grave, Lady Macbeth observes that "there's knocking at the gate," and then she says, "What's done cannot be undone." Then she leaves the stage, as it happens, for good.
What's done cannot be undone. It's a commonplace phrase, almost a catchphrase, and was possibly already a cliche in Shakespeare's time.
What's done cannot be undone. Go through that gate, and you can't get back.
Undoings: an essay in three parts
Shea used the words of Macbeth to warn President Milosevic: "What's done cannot be undone."
EUROPE AT WAR: THUGS 'HAVE BUTCHERED 30,000'