The phrase "a bad judgement" is correct and usable in written English.
It can be used when referring to a decision or conclusion that is considered poor or misguided.
Example: "His decision to invest in that failing company was a bad judgement that cost him a lot of money."
Alternatives: "a poor decision" or "a wrong call".
I fully accept now that this was a bad judgement call.
Bilic has got the nation so far – ninth in the world – on the basis of many a bad judgement from the opposition so he'll happily witness some more of the hubris which England experienced on that rainy November night in 2007 when, needing the draw to join Bilic's side in the 2008 Euros, they flunked so badly.
As usual, a bad judgement," Trump tweeted in July after Comey recommended no criminal charges against Clinton.
The station's head of news apologised, saying in a statement it was a "bad judgement call" to use the photo.
I made a bad judgement call with my material last night & regret making a joke at such a sensitive time.
The GOP report lightly criticized the Trump team for taking the meeting at Trump Tower, for which Donald Trump Jr. has received most of the scrutiny, but called it nothing more than a bad judgement call.
It was an extraordinarily bad judgement that may have reflected wishful thinking: regime change in Damascus would certainly have been a grievous blow for Iran and the Lebanese Shia militia Hizbullah – sworn enemies of Israel.
In a moment of bad judgement, I poked the man (whose physique is not unlike a sequoia) on Facebook and sent him a cordial message to find out if he knows he's being accused of gang crimes on a site that gets 200,000 hits a month.
In a moment of bad judgement, I poked the man (who's physique is not unlike a sequoia) on Facebook and sent him a cordial message to find out if he knows he's being accused of gang crimes on a site that gets 200,000 hits a month.
And Mr Wheatley doesn't spare regulators from criticism for what happened: "There was a massive, collective bad judgement which includes the regulators, who were seduced by what went on just like everyone else".
We have seen this repeatedly with Nintendo, and sometimes I don't think it's their fault, while other times it definitely might be a bit of bad judgement.
