speak your mind
US /spiːk jʊər maɪnd/
UK /spiːk jʊər maɪnd/

1.
dire ce qu'on pense, parler franchement
to say exactly what you think, even if it is not polite or may offend someone
:
•
She's not afraid to speak her mind, even to her boss.
Elle n'a pas peur de dire ce qu'elle pense, même à son patron.
•
If you want to change things, you need to speak your mind.
Si tu veux changer les choses, tu dois dire ce que tu penses.