scream blue murder
US /skriːm bluː ˈmɜːrdər/
UK /skriːm bluː ˈmɜːrdər/

1.
crier au meurtre, pousser des hauts cris
to shout or complain very loudly and angrily, especially when you are in pain, frightened, or very annoyed
:
•
When she saw the spider, she started to scream blue murder.
Quand elle a vu l'araignée, elle a commencé à crier au meurtre.
•
If you try to take his toy, he'll scream blue murder.
Si tu essaies de lui prendre son jouet, il va crier au meurtre.