slightly formal to say something that you should not have said or that you did not have the authority to say.
I'm sorry if I spoke out of turn, but somebody had to tell him the facts.
talk out of turn
To say something erroneous, foolish, or impudent at an inappropriate time or when one does not have the authority to do so. I hope I'm not talking out of turn, but I think we'd see a higher profit margin if we took better care of our employees' benefits.If you talk out of turn in my class, you can expect to receive a rap across the knuckles!