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

1.
주제넘게 말하다, 말실수하다
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.
새 프로젝트를 언급했을 때 주제넘게 말하지 않았기를 바랍니다.
•
He tends to speak out of turn, which often gets him into trouble.
그는 주제넘게 말하는 경향이 있어서 종종 문제를 일으킨다.