speak out of turn
to say something when you do not have the right or authority to say it

[TahlilGaran] Dictionary of Contemporary English ▲

speak out of turn
to say something that you should not have said.
I'm sorry if I spoke out of turn, but somebody had to tell him the facts.

Usage notes: sometimes used to describe something you did not have the authority to say:
The company president said there had not been any delays, and that the project manager had spoken out of turn.

speak/talk out of turn
[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.

[TahlilGaran] English Idioms Dictionary ▲

speak out of turn
to say something unwise, to say the right thing but at the wrong time
The young man spoke out of turn while the teacher was asking him questions.

[TahlilGaran] English Idioms Dictionary ▲

speak out of turn
v. phr. To say something tactless; commit an indiscretion.
You spoke out of turn in criticizing Aunt Hermione's old furniture; she considers herself quite a connoisseur on the subject.

[TahlilGaran] English Idioms Dictionary ▲