speak out of turn
US /spiːk aʊt əv tɜːrn/
UK /spiːk aʊt əv tɜːrn/

1.
falar fora de hora, dizer algo inoportuno
to say something inappropriate or at the wrong time, especially something that should have been kept secret or that was not one's place to say
:
•
I hope I didn't speak out of turn when I mentioned the new project.
Espero não ter falado fora de hora quando mencionei o novo projeto.
•
He tends to speak out of turn, which often gets him into trouble.
Ele tende a falar fora de hora, o que muitas vezes o mete em apuros.