not done

not done

Unacceptable, inappropriate, or incorrect in a particular social situation. You should know better than to wear a skirt like that to a formal dinner. It is simply not done! Attaching a photo to your application may be standard in some countries, but here it's just not done.
See also: done, not
Farlex Dictionary of Idioms.

not done

Socially unacceptable, improper, as in Bringing along two friends without asking, that's not done. [First half of 1900s]
See also: done, not
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • be not the done thing
  • an ounce of discretion is worth a pound of wit
  • be in the wrong
  • excuse my French
  • excuse/pardon my French
  • french
  • pardon my French
  • in the wrong
  • garbage in, garbage out
  • know different
References in classic literature
Whether she has joined him yet or not I don't know; but she had not done so some months ago when I heard from him."
"And I repeat," said Barbicane; "who told you that they have not done it?"
The fact is, that I myself have missed several small sums from the desk, of late, and have refrained from mentioning it, hoping that accident would discover the offender; but it has not done so--it has not done so.
allow me to propose a remedy, to efface the shame, and to render it as if not done. Draw your sword and knight me, then I will throw down my gauntlet, to everyone who dares to speak disrespectfully of my king.'
Sturgeon told the STUC conference in Dundee: "We have not done as well as we should in building a domestic supply chain for new renewable industries."
MP Mangole had asked why the design for the new Mochudi hospital was not done as per the budgetary provision of 2017/18 financial year.
Muhyiddin who is also the Home Minister said he had done his part as required and advised those who have not done so to abide by the given schedule.
The players have often not done it together and we've been picked off as a result.
"The better the roads, the more the tourists here, but the reconstruction of the road is not done yet.
Kirsty Rice, 26, from Denton Burn in Newcastle, said: "I've not done it because I don't have Facebook but my boyfriend has done one with makeup on and we have both donated.
Mingora -- Malala Yousafzai, the teenage activist nominated for the Nobel Peace Prize, says she has not done enough to deserve the award, as her old school closed Wednesday to mark the first anniversary of her shooting by the Taliban.
KARACHI -- On clear directives of the Supreme Court during hearing of the Karachi-unrest Case, IG Sind Fayyaz Laghari and DIG East Aleem Jafferi surrendered their portfolios but SSP Malir Rao Anwaar Khan has not done so despite ointment of an SSP on his seat.
Summary: Warwick Davis has appeared in classic Star Wars and the prequels, but it would seem he is not done yet.
Brown suggested he is losing trust in Kick It Out boss Lord Ouseley, while also asking why the chairman of the Professional Footballers Association, Gordon Taylor, has not done more.
Foreign Secretary William Hague yesterday warned Formula One it had "not done itself any good" by its decision to reinstate the Bahrain Grand Prix amid continuing concerns about the suppression of anti-government protests.