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

1.
gritar horrores, reclamar muito alto
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.
Quando ela viu a aranha, começou a gritar horrores.
•
If you try to take his toy, he'll scream blue murder.
Se você tentar pegar o brinquedo dele, ele vai gritar horrores.