speak up
verbUK /ˌspiːk ˈʌp/ · US /ˌspik ˈʌp/
1
Idiomatic To talk more loudly or clearly.
- Could you speak up? I can't hear you.
2
Idiomatic To make oneself or one's opinions known; to advocate or assert oneself.
- I feel that somebody has to speak up for those oppressed by the system.
- Speak up if I'm bothering you.