keep it a secret
Je lui ai conseillé de garder le secret.
I advised him to keep it a secret.
Il me demanda de garder le secret.
He asked me to keep it a secret.
Elle m'avait demandé de garder le secret !
She had asked me to keep it a secret!
— Ne le dis à personne (2006)
Nous avons caché l'enfant, et juré de garder le secret.
We hid the child and swore to keep it a secret.
— Blade Runner 2049 (2017)
Tu as bien fait de garder le secret.
You did well to keep it a secret.
J'ai juré de garder le secret.
I'm sworn to secrecy.
Tout d'abord, tu dois garder le secret à tout prix.
First of all, you must keep it a secret at all costs.
— Heureux comme Lazzaro (2018)
Je lui avais juré de garder le secret.
I had sworn to him that I would keep the secret.
— Ne le dis à personne (2006)
Il me demande d'en garder le secret.
He asks me to keep it a secret.